CITATION COMPUTER SYSTEMS INC
DEFS14A, 2000-07-13
COMPUTER INTEGRATED SYSTEMS DESIGN
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                        UNITED STATES
             SECURITIES AND EXCHANGE COMMISSION
                   WASHINGTON, D.C.  20549

                        SCHEDULE 14A

 Proxy Statement Pursuant to Section 14(a) of the Securities
           Exchange Act of 1934 (Amendment No. __)

Filed by the Registrant [X]

Filed by a Party other than the Registrant [_]

Check the appropriate box:

[_]  Preliminary Proxy Statement

[_]  CONFIDENTIAL, FOR USE OF THE COMMISSION ONLY (AS
     PERMITTED BY RULE 14A-6(E) (2))

[X]  Definitive Proxy Statement

[_]  Definitive Additional Materials

[_]  Soliciting Material Pursuant to (S) 240.14a-11(c) or
     (S) 240.14a-12


               CITATION Computer Systems, Inc.
------------------------------------------------------------------------
      (Name of Registrant as Specified In Its Charter)

________________________________________________________________________
(Name of Person(s) Filing Proxy Statement, if other than the
                         Registrant)

Payment of Filing Fee (Check the appropriate box):

[X]  No fee required.

[_]  Fee computed on table below per Exchange Act Rules 14a-
     6(i)(4) and 0-11.

     (1)  Title of each class of securities to which
     transaction applies:
     ___________________________________________________________________

     (2)  Aggregate number of securities to which
     transaction applies:
     ___________________________________________________________________

     (3)  Per unit price or other underlying value of transaction
          computed pursuant to Exchange Act Rule 0-11 (set forth the
          amount on which the filing fee is calculated and state how
          it was determined):
     ___________________________________________________________________

     (4)  Proposed maximum aggregate value of transaction:

     ___________________________________________________________________

     (5)  Total fee paid:

     ___________________________________________________________________

[_]  Fee paid previously with preliminary materials.

[_]  Check box if any part of the fee is offset as provided
     by Exchange Act Rule 0-11(a)(2) and identify the filing
     for which the offsetting fee was paid previously.
     Identify the previous filing by registration statement
     number, or the Form or Schedule and the date of its
     filing.

     (1)  Amount Previously Paid:

     ___________________________________________________________________

     (2)  Form, Schedule or Registration Statement No.:

     ___________________________________________________________________

     (3)  Filing Party:

     ___________________________________________________________________

     (4)  Date Filed:

     ___________________________________________________________________

Notes:

<PAGE>

[Logo of Cerner]                     [Logo of CITATION Computer Systems, Inc.]

    PROSPECTUS OF                             PROXY STATEMENT OF
 CERNER CORPORATION                   CITATION COMPUTER SYSTEMS, INC.

            MERGER PROPOSED - YOUR VOTE IS VERY IMPORTANT

       To the Shareholders of CITATION Computer Systems, Inc.

  The boards of directors of Cerner Corporation and CITATION
Computer Systems, Inc. have approved a merger agreement that  would
result in Cerner's acquiring CITATION.  The merger offers CITATION
shareholders the opportunity to become shareholders of Cerner, a
larger organization.  CITATION believes the combination of these two
companies will result in an opportunity to create substantially more
shareholder value than could be achieved by CITATION individually.

  If CITATION completes the merger, CITATION shareholders will
receive $5.10 in cash per share with respect to ten percent of their
shares and 0.1695 shares of Cerner common stock per share with
respect to ninety percent of their shares.  For example, in the
merger, a person who holds 100 shares of CITATION common stock will
receive $51.00 in cash (10 shares multiplied by $5.10), 15 shares of
Cerner common stock (90 shares multiplied by 0.1695) and an amount of
cash in lieu of the remaining 0.255 shares equal to the value of such
fractional share.

  CITATION cannot complete the merger unless the shareholders of
CITATION approve it.  CITATION will hold a meeting of its
shareholders to vote on the merger.  Your vote is very important.
Whether or not you plan to attend the shareholder meeting, please
vote by completing and mailing the enclosed proxy card to us.  If you
sign, date and mail your proxy card without indicating how you want
to vote, your proxy will be counted as a vote in favor of the merger.
Not returning your proxy card or not instructing your broker how to
vote shares held for you in "street name" will have the same effect
as voting those shares against the merger.

The date, time and place of the meeting is:

August 17, 2000, 10:00 a.m. local time
11 South Meramec
Clayton, Missouri

  This document provides you with detailed information about the
proposed merger.  CITATION encourages you to read this entire
document carefully.

   [/s/ Neal L. Patterson]          [/s/ J. Robert Copper]
   Neal L. Patterson                J. Robert Copper
   Chairman of the Board and        Chairman of the Board and
   Chief Executive Officer          Chief Executive Officer
   Cerner Corporation               CITATION Computer Systems, Inc.

  Cerner's common stock is quoted on the Nasdaq National Market
under the symbol "CERN."

  For a discussion of certain risk factors which you should consider
in evaluating the merger, see "Risk Factors" beginning on page 13.

_____________________________________________________________________
Neither the Securities and Exchange Commission nor any state
securities regulators has approved or disapproved of the Cerner
common stock to be issued in the merger or determined whether this
document is truthful or complete.  Any representation to the contrary
is a criminal offense.
_____________________________________________________________________

This proxy statement/prospectus is dated July 6, 2000, and is being
first mailed to shareholders on or about July 12, 2000.

<PAGE>

                           [CITATION Logo]
                          -----------------

              NOTICE OF SPECIAL MEETING OF SHAREHOLDERS
               To be held on August 17, 2000
                          _________________

To the shareholders of CITATION Computer Systems, Inc.:


     A special meeting of shareholders of CITATION Computer Systems,
Inc., a Missouri corporation, will be held at 11 South Meramec,
Clayton, Missouri on August 17, 2000,
commencing at 10:00 a.m., local time, to consider and act upon:

1.   A proposal to adopt the Agreement and Plan of Merger, by and
     among Cerner Corporation, Cerner Performance Logistics, Inc.,
     and CITATION, dated as of May 15, 2000, which is described in
     this proxy statement/prospectus, and the transactions
     contemplated thereby.  Under the merger agreement:

        CITATION will merge with and into Cerner Performance
        Logistics, Inc., a wholly owned subsidiary of Cerner
        Corporation; and

        ninety percent of the shares of CITATION common stock held by
        each shareholder will each be converted into 0.1695 shares of
        Cerner common stock and ten percent of the shares of CITATION
        common stock held by each shareholder will each be converted
        into the right to receive $5.10 in cash.

2.   Such other business as may properly come before the meeting.


     These proposals and other related matters are more fully
described in the accompanying proxy statement/prospectus.  A copy of
the merger agreement is attached to the proxy statement/prospectus as
Appendix A.

     Only holders of record of common stock of CITATION at the close
of business on July 6, 2000 are entitled to notice of and to
vote at the meeting.

     The board of directors of CITATION has approved the merger
agreement, declared its advisability and recommends that you vote FOR
adoption of the merger agreement and the transactions contemplated
thereby.

     Your vote is important.  Please date, sign and return the
accompanying proxy card promptly in the enclosed envelope, whether or
not you intend to be present at the meeting.  Sending in your proxy
now will not interfere with your right to attend the meeting or to
vote your shares personally at the meeting if you wish to do so.  If
your shares are held in "street name" by your broker or other
nominee, only that holder can vote your shares.  You should follow
the directions provided by them regarding how to instruct them to
vote your shares.

     You may revoke your proxy with respect to any proposal at any
time prior to the completion of the voting on such proposal at the
meeting, by following the procedures set forth in the accompanying
proxy statement/prospectus.

                                   By Order of the Board of Directors


                                   /s/ Richard D. Neece
                                   ----------------------------------
                                   Richard D. Neece
                                   Secretary
Chesterfield, Missouri
July 6, 2000

<PAGE>

                          TABLE OF CONTENTS

                                                                 Page
                                                                 ----

QUESTIONS AND ANSWERS ABOUT THE MERGER AND THE SHAREHOLDER
  MEETING......................................................... 1
SUMMARY........................................................... 3
SUMMARY FINANCIAL INFORMATION..................................... 7
  Cerner Summary Historical Consolidated Financial Information.... 7
  CITATION Summary Historical Consolidated Financial Information.. 9
COMPARATIVE PER SHARE DATA........................................10
COMPARATIVE MARKET PRICE AND DIVIDEND INFORMATION.................11
RISK FACTORS......................................................13
RECENT DEVELOPMENTS...............................................17
CITATION SPECIAL MEETING..........................................17
  Date, Time and Place............................................17
  Matters to be Considered........................................17
  Record Date; Stock Entitled to Vote; Quorum.....................17
  Vote Required...................................................18
  Security Ownership of Management................................18
  Voting of Proxies...............................................18
THE MERGER........................................................19
  General.........................................................19
  Exchange of CITATION Shares.....................................20
  Stock Options...................................................20
  Exchange of Stock Certificates..................................20
  Background of the Merger........................................20
  Cerner's Reasons for the Merger.................................23
  Recommendation of the CITATION Board and Reasons for the Merger.24
  Opinion of CITATION's Financial Advisor.........................25
  Federal Securities Laws Consequences and Restrictions on Resales
     by Affiliates................................................31
  Shareholders Agreement..........................................31
  Fees and Expenses of the Merger.................................32
  Accounting Treatment............................................32
  Federal Income Tax Consequences.................................32
  Interests of Certain Persons in the Merger......................33
  Dissenters' Rights..............................................35
  Conditions to the Merger........................................36
  Regulatory Approval.............................................37
  Conduct of Business Pending the Merger..........................37
  No Solicitation.................................................38
  Waiver and Amendment............................................39
  Termination of the Merger Agreement.............................39
  Nasdaq National Market Listing..................................40
  Effective Time..................................................40
INFORMATION REGARDING CITATION....................................41
CITATION'S MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
  CONDITION AND RESULTS OF OPERATIONS.............................45
COMPARATIVE RIGHTS OF SHAREHOLDERS................................51
EXPERTS...........................................................55
LEGAL MATTERS.....................................................55
FUTURE SHAREHOLDER PROPOSALS......................................55
WHERE YOU CAN FIND MORE INFORMATION...............................56
INDEX TO FINANCIAL STATEMENTS OF CITATION Computer Systems, Inc..F-1

APPENDIX A--Agreement and Plan of Merger
APPENDIX B--Opinion of CITATION Financial Advisor
APPENDIX C--Shareholder Agreement
APPENDIX D--Section 351.455, R.S.Mo. Concerning Dissenters'Rights

<PAGE>                           -i-

                        QUESTIONS AND ANSWERS
            ABOUT THE MERGER AND THE SHAREHOLDER MEETING

Q:  Why are the two companies proposing to merge?

A:  We believe the proposed merger is in the best interests of both of
    the companies and their respective shareholders.  The board of
    directors of Cerner believes that the merger will result in an
    addition to Cerner's significant laboratory client base that
    primarily consists of larger hospitals, health systems and
    independent laboratories.  The board of directors of CITATION
    believes the merger provides significant value to CITATION
    shareholders and enables them to participate in the opportunities
    for growth offered by Cerner.

    You should review the reasons for the merger described in greater
    detail at pages 23 through 25.

Q:  When and where is the special meeting?

A:  The CITATION special meeting is scheduled to take place on
    August 17, 2000, at 10:00 a.m. local time, at 11 South Meramec,
    Clayton, Missouri.

Q:  When do you expect the merger to be completed?

A:  We expect to complete the merger promptly after receiving
    shareholder approval at the special meeting.

Q:  What do I need to do now?

A:  You should carefully read and consider the information contained
    in this document.  Then, please fill out, sign and mail your proxy
    card in the enclosed return envelope as soon as possible so that
    your shares may be represented at the special meeting.  If the
    card does not specify a choice it will be voted "FOR" the merger
    and the transactions contemplated thereby.

Q:  What if I don't vote or I abstain from voting?

A:  If you do not vote or you abstain from voting, the effect will be
    a vote against the merger and the transactions contemplated
    thereby.

Q:  If my shares are held by my broker in "street name," will my
    broker vote my shares for me?

A:  Your broker will vote your shares only if you provide instructions
    on how to vote.  You should follow the directions provided by your
    broker to vote your shares.  If you do not provide your broker
    with instructions on how to vote your shares held in "street
    name," your broker will not be permitted to vote your shares,
    which will have the effect of a "NO" vote on the merger and the
    transactions contemplated thereby.

Q:  May I change my vote after I have mailed my signed proxy card?

A:  Yes.  You may change your vote at any time before your proxy is
    voted at the special meeting.  You can do this in one of three
    ways.  First, you can send a written notice stating that you would
    like to revoke your proxy.  Second, you can complete and submit a
    new proxy card.  If you choose either of these two methods, you
    must submit your notice of revocation or your new proxy card to
    CITATION Computer Systems, Inc., at 424 South Woods Mill Road,
    Suite 200, Chesterfield, Missouri 63017, Attention: Richard D.
    Neece, Secretary, prior to the Special Meeting to be held on August
    17, 2000. Third, you can attend the special meeting and vote in
    person. Simply attending the meeting, however, will not revoke your
    proxy; you must request a ballot and vote the ballot at the meeting.
    If you have instructed a broker to vote your shares, you must
    follow directions received from your broker to change your vote.

Q:  Should I send in my stock certificate now?

A:  No.  After the merger is completed, you will receive written
    instructions for exchanging your stock certificates for
    certificates of Cerner common stock and the cash consideration.

Q:  Who can I call with questions about the special meeting or the
    merger?

A:  You can contact Richard D. Neece, President, of CITATION, at (314)
    579-7900.

<PAGE>                           -1-

     This document incorporates important business and financial
information about Cerner and CITATION from documents filed with the
SEC that have not been included in or delivered with this document.
You may read and copy these documents at the SEC's public reference
facilities.  Please call the SEC at 1-800-SEC-0330 for information
about these facilities.  This information is also available at the
Internet site the SEC maintains at http:\\www.sec.gov.  Reports and
other information relating to Cerner and CITATION are also available
at the offices of the Nasdaq National Market.  See "Where You Can
Find More Information" on page 59.

     Cerner will provide you with copies of the documents relating to
Cerner, without charge, upon written or oral request to:

                         Cerner Corporation
                       2800 Rockcreek Parkway
                    Kansas City, Missouri  64117
                           (816) 221-1024
                      Attention:  Randy D. Sims

     CITATION will provide you with copies of the documents relating
to CITATION, without charge, upon written or oral request to:

                   CITATION Computer Systems, Inc.
                424 South Woods Mill Road, Suite 200
                    Chesterfield, Missouri  63017
                           (314) 579-7900
                    Attention:  Maureen Gallagher

     In order to receive timely delivery of the documents in advance
of the special meeting of shareholders, you should make your request
no later than August 7, 2000.

<PAGE>                           -2-

____________________________________________________________________


                               SUMMARY

     This Summary, together with the preceding Question and Answer
section, highlights selected information from this proxy
statement/prospectus and may not contain all the information that is
important to you.  To better understand the merger and related
transactions and for a more complete description of the legal terms
of the merger and related transactions,  you should carefully read
this entire document and the documents to which we have referred you.
See "Where You Can Find More Information" on page 56.

                            The Companies

Cerner Corporation
2800 Rockcreek Parkway
Kansas City, Missouri  64117
(816) 221-1024

Cerner, a Delaware corporation incorporated in 1980, is a leading
supplier of clinical and management information and knowledge systems
to healthcare organizations worldwide.  Cerner's mission is to
connect the appropriate persons, knowledge and resources at the
appropriate time and location to achieve the optimal health outcome.

CITATION Computer Systems, Inc.
424 South Woods Mill Road
Suite 200
Chesterfield, Missouri  63017
(314) 579-7900

CITATION designs, develops, markets and supports patient-centered
clinical information systems for hospitals, clinics, physicians'
groups and emerging Integrated Delivery Networks. CITATION offers a
comprehensive suite of clinical products using open client/server
architecture that meets a broad range of the information systems
needs of the healthcare industry. These products integrate patient
care processes within the enterprise.

                             The Merger

  We have attached a copy of the Agreement and Plan of Merger to
this document as Appendix A.  We encourage you to read this merger
agreement as it is the legal document that governs the merger.

Our Reasons for the Merger  (see pages 23 through 25)

  We are proposing to merge because we believe that:

  by combining the companies we can create a stronger company that
will provide benefits to both our shareholders and customers; and

  the merger will strengthen the combined company's position as a
competitor in the healthcare information management industry, which
is rapidly changing and growing more competitive.

CITATION's Board of Directors Unanimously Recommends that CITATION's
Shareholders Approve the Merger and Related Transactions (see pages
24 through 25)

  The CITATION board of directors believes that the merger and the
transactions contemplated thereby are fair to you and in your best
interests and unanimously recommends that you vote "FOR" the proposal
to approve and adopt the merger agreement and the transactions
contemplated thereby.

What CITATION's Shareholders Will Receive (see page 19)

  If we complete the merger, you will receive for ninety percent of
your shares of CITATION common stock 0.1695 shares of Cerner common
stock for each such share.  You will receive for ten percent of your
shares of CITATION common stock $5.10 in cash per share.  Cerner will
not issue any fractional shares in the merger.  Instead, you will
receive cash for any fractional share of Cerner common stock owed to
you.  The amount of cash you will receive for any such fractional
shares will be calculated based on an average of Cerner's stock
closing sales price for the twenty trading days preceding the third
trading day before the effective time of the merger.  For example:

  If you currently own 100 shares of CITATION common stock and
  the average of the closing sale prices of Cerner common stock
  during such twenty-day period is $25.00, then after the
  merger, you will receive a check in the amount of $57.38,
  which represents $51.00 (ten shares multiplied by $5.10) plus
  $6.38 (0.255 fractional share amount multiplied by $25.00) and
  fifteen shares of Cerner common stock (ninety shares
  multiplied by 0.1695).

                                  -3-
______________________________________________________________________

<PAGE>
_______________________________________________________________________

  Following the merger, you will be entitled to exchange your shares
of CITATION common stock for shares of Cerner common stock and the
cash consideration by sending your CITATION common stock shares
certificate and the form that we will send to you to the exchange
agent, UMB Bank, n.a., which will then exchange them for shares of
Cerner common stock and the cash consideration.  For more information
on how this exchange procedure works, see "The Merger - Exchange of
Stock Certificates" on page 20.

  Because the number of shares of Cerner common stock that you will
receive in the merger is fixed, the value of the shares of Cerner
common stock that you will receive in the merger will change if the
price of Cerner common stock changes.  We encourage you to check for
a recent quote of Cerner common stock.

Federal Income Tax Consequences (see pages 32 through 33)

     We expect that you generally will not recognize any gain or loss
for U.S. federal income tax purposes as a result of your exchange of
shares of CITATION common stock for shares of Cerner common stock.
You may, however, have to recognize income or gain in connection with
the cash received in exchange for your shares of CITATION common
stock.  This tax treatment may not apply to all CITATION
shareholders. Determining the actual tax consequences of the merger
to you can be complicated. You should consult your own tax advisor
for a full understanding of the merger's tax consequences that are
particular to you.  We will not be obligated to complete the merger
unless we receive legal opinions, dated the closing date, that the
merger will be treated for federal income tax purposes as a
reorganization within the meaning of Section 368(a) of the Internal
Revenue Code. In that case, the U.S. federal income tax treatment of
the merger will be as we have described it above. This opinion,
however, will not bind the Internal Revenue Service, which could take
a different view.

Dissenters' Rights (see pages 35 through 36)

  You have the right under Missouri law to dissent and obtain
payment in cash of the fair value of your CITATION common stock as of
the day prior to the CITATION shareholders meeting.  To exercise
dissenter's rights, you must:

  deliver a written objection to CITATION prior to or at the
  shareholders' meeting;

  not vote in favor of the merger agreement; and

  deliver to the combined company within twenty days after the
  merger a written demand for payment of the fair value of your
  CITATION common stock.

Opinion of CITATION's Financial Advisor (see pages 25 through 31)

  In deciding to approve the merger, the CITATION board considered
the opinion from its financial advisor, A.G. Edwards & Sons, Inc., as
to the fairness, from a financial point of view, of the shares of
Cerner common stock and cash to be exchanged for the CITATION common
stock.  A copy of this opinion is attached as Appendix B to this
proxy statement/prospectus.

Conditions to the Merger (see pages 36 through 37)

  The completion of the merger depends upon the satisfaction of a
number of conditions, including the following:

  approval by CITATION's shareholders;

  the continued accuracy of each company's representations and
  warranties and compliance by each company with its agreements
  contained in the merger agreement;

  receipt of a legal opinion from Cerner's and CITATION's respective
  counsel as to the tax consequences of the merger;

  receipt of any required regulatory approvals;

  there being no legal action or court order that prohibits the
  merger; and

  there having not been a material adverse change in the financial
  condition or assets of either Cerner or CITATION.

Termination of the Merger Agreement (see pages 39 through 40)

  We can agree to terminate the merger agreement without completing
the merger even if CITATION's shareholders have approved it.  Also,
either of us can terminate the merger agreement on our own without
completing the merger under various circumstances, including:

  if the merger has not been consummated by December 30, 2000;

  if there is any law that makes consummation of the merger illegal
  or otherwise prohibited;

                                  -4-
_______________________________________________________________________

<PAGE>

_______________________________________________________________________

  if the CITATION shareholders do not approve the merger on or
  before December 30, 2000; or

  if the other company has materially breached its representations,
  warranties or obligations under the merger agreement.

  In addition, Cerner may decide not to complete the merger if (a)
CITATION's board of directors changes, in a manner adverse to Cerner,
its recommendation that CITATION's shareholders approve the merger,
(b) CITATION has entered into an agreement to be acquired by another
party or if the CITATION board or committee of the board approves
such a transaction to be acquired, or (c) a tender offer or exchange
offer for the common stock of CITATION has been commenced and
CITATION has not sent to its shareholders, within ten business days
after the commencement of such tender or exchange offer, a statement
that CITATION recommends rejection of such tender or exchange offer.
Similarly, CITATION may decide not to complete the merger if it
receives an acquisition proposal from another party that the CITATION
board believes is superior to the merger.

Termination Fees and Expenses (see page 40)

  CITATION is required to pay Cerner a termination fee of
$600,000 if:

  CITATION terminates the merger agreement or modifies or withdraws
  its recommendation of the merger and merger agreement because it
  received an acquisition proposal from another party that the
  CITATION board believes is superior to the merger; or

  Either party terminates the merger agreement because the CITATION
  shareholders did not approve the merger agreement on or before
  December 30, 2000, and the closing price of Cerner common stock is
  greater than $24.00 per share on at least ten of the twenty days
  prior to the date of the CITATION shareholder meeting.

Stock Options (see page 20)
  Upon completion of the merger, each option to acquire CITATION
common stock that is outstanding and unexercised immediately before
completing the merger will become an option to purchase Cerner common
stock.  The number of shares of Cerner common stock subject to such
stock options, as well as the exercise price of those stock options,
will be adjusted to account for the exchange ratio in the merger.
Additionally, certain stock options held by CITATION directors
contain provisions that cause the options to become fully vested upon
a change in control.  Therefore, those options will vest as a result
of the merger.  The options will continue to be governed by the terms
of the CITATION stock option plans and the agreements under which
such options were granted.

We May Amend the Terms of the Merger and Waive Rights Under the
Merger Agreement (see page 39)

  We may jointly amend the terms of the merger agreement, and either
party may waive its right to require the other party to adhere to any
of those terms, to the extent legally permissible.  However, after
the CITATION shareholders approve the merger agreement, they must
approve any amendment or waiver that would require such approval
under any applicable law.

CITATION Officers and Directors Have Some Interests in the Merger
That Are Different From or in Addition to Their Interests as
Shareholders (see pages 33 through 35)

  CITATION directors and officers have interests in the merger in
addition to their interest as shareholders of CITATION.  These
interests exist because of employment and/or other agreements that
CITATION officers have entered into with CITATION or Cerner and
rights that CITATION officers and directors have under certain
benefit and compensation plans maintained by CITATION.

     Following the merger, the combined company will indemnify, and
provide directors and officers insurance for, the officers and
directors of CITATION for events occurring before the merger,
including events that are related to the merger.  Also, upon
completion of the merger, Mr. J. Robert Copper and Mr. Richard D.
Neece will become employees of Cerner under the terms of employment
agreements.

     The CITATION board of directors knew about these additional
interests, and considered them, when it approved the merger
agreement.

Comparative Market Price Information (see pages 11 through 12)

  The shares of Cerner and CITATION common stock trade on the Nasdaq
National Market under the symbols "CERN" and "CITA," respectively.

                                   -5-
_______________________________________________________________________

<PAGE>
_______________________________________________________________________

  The following table lists the closing prices of Cerner common stock
and CITATION common stock, and the equivalent per share value of a
share of CITATION common stock, on May 15, 2000, the last trading day
before we announced the merger, and on July 6, 2000.  The
"equivalent per share value of CITATION common stock" at the
specified dates represents the closing price of a share of Cerner
common stock on that date multiplied by the exchange ratio of 0.1695.

<TABLE>

  ____________________________________________________________
 |               |          |             |  Equivalent Per   |
 |               | Cerner   |  CITATION   |  Share Value of   |
 |               | Common   |   Common    |    CITATION       |
 |               | Stock    |   Stock     |   Common Stock    |
 |_______________|__________|_____________|___________________|
 |<S>            |  <C>     |    <C>      |    <C>            |
 |May 15, 2000   |  $25.13  |    $3.00    |    $4.26          |
 |_______________|__________|_____________|___________________|
 |July 6, 2000   |  $28.13  |    $4.31    |    $4.77          |
 |_______________|__________|_____________|___________________|

</TABLE>

  The market price of Cerner common stock will change prior to the
merger, while the exchange ratio is fixed.  As a result, the value of
the Cerner stock that you will receive may fluctuate before and after
the merger.  You should obtain current stock price quotations for
Cerner common stock and CITATION common stock.  You can get these
quotations from a newspaper, on the Internet or by calling your broker.

Forward-Looking Statements May Prove Inaccurate (see "Risk Factors,"
beginning on page 13)

  This proxy statement/prospectus, including information included or
incorporated by reference in this document, contains certain forward-
looking statements with respect to the financial condition, results
of operations, plans, objectives, future performance and business of
each of Cerner and CITATION.  Also, any statements preceded by,
followed by or that include the words "believes," "expect, "
"anticipates," "estimates" or similar expressions, are forward-
looking statements.  These forward-looking statements involve certain
risks and uncertainties.  The actual results may differ materially
from those contemplated by the forward-looking statements due to
various factors.

                               -6-
_____________________________________________________________________

<PAGE>
_____________________________________________________________________

                    SUMMARY FINANCIAL INFORMATION

     We  are providing the following financial information to aid you
in  your  analysis  of  the financial aspects of  the  merger.   This
information  is only a summary and you should read it in  conjunction
with  the historical financial statements of Cerner and CITATION  and
the  related  notes  and  "CITATION's  Management's   Discussion  and
Analysis  of Financial  Condition  and Results of Operations".  These
items  for CITATION  are  contained  under  the caption   "CITATION's
Management's Discussion  and  Analysis  of  Financial  Condition  and
Results  of  Operations" beginning  on  page  45 and  in the CITATION
consolidated financial  statements beginning on page F-2. These items
for Cerner are contained  in  its annual, quarterly and other reports
that Cerner has filed with the  Securities  and  Exchange  Commission
that are incorporated  herein by reference.  See "Where You  Can Find
More Information" on page 56.

    Cerner Summary Historical Consolidated Financial Information

     The  historical  consolidated financial information  for  Cerner
reflects  the  following items which you should  consider  in  making
period-to-period comparisons.  We derived the information below  from
the  audited  consolidated financial statements  of  Cerner  for  its
fiscal  years 1999, 1998, 1997, 1996 and 1995, and from the unaudited
consolidated financial statements for the three months ended April 1,
2000  and  April  3,  1999.  The unaudited information  contains  all
adjustments,  consisting  of normal recurring  accruals  that  Cerner
considers necessary for a fair presentation of its financial position
and results of operations as of such dates and for these periods. The
results for the three months ended April 1, 2000 are not  necessarily
indicative  of the  results  to  be expected for the full year ending
December 31, 2000.

<TABLE>

                            Three Months
                               Ended,                                   Fiscal Year Ended
                          ---------------        ------------------------------------------------------------

                          April 1,  April 3,    January 1,  January 2,  January 3,  December 28,  December 30,
                          2000 (1)    1999      2000 (2)(3)  1999 (4)      1998         1996         1995
                          --------    ----      -----------  --------      ----         ----         ----
                                               (In thousands, except per share data)

<S>                       <C>       <C>         <C>         <C>         <C>          <C>          <C>
Statements of Earnings Data:

Revenues................  $87,107   $86,743     $340,197    $330,902    $245,057     $189,107     $186,901
Operating earnings......    4,935     4,874        3,698      33,530      22,170       10,601       37,265

Earnings before income taxes and
 extraordinary item.....    3,986     4,543          302      33,268      24,484       12,902       37,220

Extraordinary item-early
 extinguishment of debt.        -         -       (1,395)          -           -            -	         -
Net earnings(loss)......    2,392     2,817       (1,211)     20,589      15,148        8,251       22,521
Earnings per share before
 extraordinary item:
  Basic.................     $.07      $.08         $.01        $.63        $.46         $.25         $.75
  Diluted...............      .07       .08          .01         .61         .45          .25          .72
Earnings (loss) per share:
  Basic.................      .07       .08         (.04)        .63         .46          .25          .75
  Diluted...............      .07       .08         (.04)        .61         .45          .25          .72
Weighted average shares
 outstanding:
  Basic.................   33,778    33,559       33,623      32,825      32,881       32,729       29,845
  Diluted...............   34,697    33,923       33,916      33,667      33,668       33,620       31,448

</TABLE>

<TABLE>

                         April 1,  April 3,  January 1,  January 2,  January 3,  December 28,  December 30,
                          2000      1999       2000        1999        1998         1996           1995
                          ----      ----       ----        ----        ----         ----           ----

<S>                      <C>       <C>       <C>         <C>         <C>         <C>            <C>
Balance Sheet Data:
Working capital......... $170,246  $120,745  $170,053    $118,681    $156,808    $171,204       $174,064
Total assets............  727,856   428,764   660,891     436,485     331,781     314,753        303,945
Long-term debt, net.....  100,000    25,000   100,000      25,000      30,026      30,000         30,104
Stockholders' equity....  419,335   274,428   378,937     271,143     233,747     230,735        221,374

</TABLE>

                                                             -7-
_______________________________________________________________________________

<PAGE>
_______________________________________________________________________________

_______________________________________

(1)  See "Recent Developments" on page 17.

(2)  Includes  a  non-recurring charge of $5.8 million, net  of  $3.6
     million  tax benefit, related to the cost in excess of  revenues
     of  completing  fixed  fee implementation contracts.   The  tax-
     effected impact of non-recurring charges on diluted earnings per
     share was ($.17) for 1999.

(3)  Includes  a  non-recurring charge of $.9  million,  net  of  $.5
     million   tax  benefit,  related  to  the  accrual   of   branch
     restructuring  costs.  The tax-effected impact of  non-recurring
     charges on diluted earnings per share was ($.03) for 1999.

(4)  Includes  a  non-recurring, acquisition-related charge  of  $3.1
     million,  net  of  $1.9 million tax benefit.   The  tax-effected
     impact  of  non-recurring charges on diluted earnings per  share
     was ($.09) for 1998.

                                   -8-

_____________________________________________________________________

<PAGE>

_____________________________________________________________________

   CITATION Summary Historical Consolidated Financial Information

     The  historical consolidated financial information for  CITATION
reflects  the  following items which you should  consider  in  making
period-to-period comparisons.  We derived the information below  from
the  audited  consolidated financial statements of CITATION  for  its
fiscal years 2000, 1999, 1998, 1997 and 1996.

<TABLE>

                                                             Fiscal Year Ended March 31,
                                                -----------------------------------------------------
                                                   2000(1)   1999(1)   1998(1)   1997(2)(3)  1996(4)
                                                  -------    -------   -------   ----------  -------
                              (In thousands, except per share data)

<S>                                                <C>       <C>       <C>       <C>         <C>
Statement of Earnings Data:
Revenues........................................   $14,996   $16,128   $16,640   $22,005     $25,051
Gross profit....................................     7,702     8,084     8,340    11,355      13,981
Research and development expenses...............     2,500     2,369     3,199     3,268       1,672
Selling and administrative expenses.............     4,829     5,207     6,686     8,515       8,711
Restructuring costs and other
  non-recurring charges.........................         -         -       832     4,299           -
Office consolidation and relocation
 expenses.......................................         -         -         -         -       1,380
Loss on sale of financial system business.......         -       663         -         -           -
Operating income (loss).........................       373      (155)   (2,377)   (4,727)      2,218
Other income(expense)-net.......................       (58)     (514)     (290)     (553)         95
Income (loss) before taxes......................       315      (669)   (2,667)   (5,280)      2,313
Net income(loss)................................       189      (415)   (1,653)   (3,274)      1,412
Earnings (loss) per share - basic and diluted...   $   .05   $  (.11)  $  (.43)  $  (.87)    $   .38
Weighted average shares outstanding
         Basic..................................     3,858     3,823     3,807     3,773       3,727
         Diluted................................     3,889     3,823     3,807     3,773       3,751

</TABLE>

<TABLE>

                                                         March 31,
                                   --------------------------------------------------
                                      2000      1999      1998      1997     1996
                                      ----      ----      ----      ----     ----

<S>                                 <C>       <C>       <C>       <C>       <C>
Balance Sheet Data:
Working capital..................   $ 4,115   $ 3,796   $ 2,940   $ 5,152   $ 7,908
Total assets.....................    12,071    13,878    14,312    17,338    21,257
Long-term debt...................       622     1,491     1,379     2,401       450
Shareholders' equity.............     8,083     7,818     8,147     9,809    12,614

</TABLE>

__________________________________________
(1)  See notes 2, 3, and 5 to the Consolidated Financial Statements
     for information on fiscal year 2000, 1999 and 1998 charges.
(2)  During fiscal 1997, CITATION sold its United Kingdom operation
     and recorded a pretax charge of $4.3 million.
(3)  During fiscal 1997, CITATION recorded a pretax charge of $.5
     million for costs related to a proposed secondary offering
     of shares of common stock, which was not completed.
(4)  During fiscal 1996, CITATION consolidated its operations into
     its St. Louis, Missouri headquarters and recorded a pretax
     charge of $1.4 million for related costs.

                                     -9-
______________________________________________________________________

<PAGE>
______________________________________________________________________

                     COMPARATIVE PER SHARE DATA

     This  table  should be read in conjunction with  the  historical
consolidated  financial statements and notes thereto for  Cerner  and
the   historical  consolidated  financial  statements  for   CITATION
incorporated by reference and  contained  herein.  Pro forma combined
and   equivalent pro  forma  per  share  data  reflect  the  combined
results of  Cerner  and  CITATION presented as though they  were  one
company for all periods shown.  The acquisition  of  CITATION will be
accounted for as a  purchase.   The  purchase  price of  $17  million
using Cerner's stock price as of June 2,  2000, has been allocated to
the assets and  liabilities based  on  their  estimated  fair  values
with  the  resulting  amount  of  goodwill  of  $9  million.     Such
allocations are preliminary and are subject  to  final determination.
Cerner  anticipates  that  a  portion  of  the purchase price will be
allocated to  in process   research  and  development,  but is unable
to reliably estimate  the amount  at  this  time,  such   amount,  if
any, will  be  charged  to  earnings  of the then current period. The
goodwill is to be  amortized  over  a  period  of seven  years.  Such
allocations are  preliminary and are  subject to final determination.
All amounts are unaudited.

<TABLE>


                                              Three Months Ended     Year Ended
                                                 April 1, 2000     January 1, 2000
                                                 -------------     ---------------

<S>                                                 <C>                 <C>
Book value per common share (at period end).......  $12.41              $11.23
Basic earnings (loss) per share...................     .07                (.04)
Diluted earnings (loss) per share.................     .07                (.04)
Cash dividends declared per share.................       -                   -

</TABLE>

<TABLE>


                                               Three Months Ended      Year Ended
CITATION-Historical                              March 31, 2000     December 31, 1999
                                                 --------------     -----------------

<S>                                                  <C>                  <C>
Book value per common share(at period end).......    $2.08                $2.12
Basic earnings (loss) per share..................     (.03)                (.09)
Diluted earnings (loss) per share................     (.03)                (.09)
Cash dividends declared per share................        -                    -

</TABLE>

<TABLE>


                                               Three Months Ended     Year Ended
                                                 April 1, 2000      January 1, 2000
                                                 -------------      ---------------

<S>                                                 <C>               <C>
Cerner-Pro Forma
Book value per common share (at period end).......  $12.61            $11.47
Basic earnings (loss) per share...................     .06              (.08)
Diluted earnings (loss) per share.................     .06              (.08)
Cash dividends declared per share.................       -                 -

</TABLE>

<TABLE>

                                              Three Months Ended      Year Ended
                                                March 31, 2000     December 31, 1999
                                                --------------     -----------------

<S>                                                  <C>              <C>
CITATION-Equivalent Pro Forma
Book value per common share(at period end).......    $2.14            $1.94
Basic earnings (loss) per share..................      .01             (.01)
Diluted earnings (loss) per share................      .01             (.01)
Cash dividends declared per share................        -                -

</TABLE>

The  CITATION  equivalent    pro    forma    per   share amounts were
calculated  by multiplying the Cerner pro forma per share amounts  by
the  exchange ratio of 0.1695.  The equivalent pro forma amounts take
into consideration only those shares of Citation (90%) that will   be
exchanged for Cerner stock. For the 10% of shares exchanged for cash,
Citation shareholders will receive 0.51 per share.

                                 -10-
_____________________________________________________________________

<PAGE>
_____________________________________________________________________

          COMPARATIVE MARKET PRICE AND DIVIDEND INFORMATION

     The  shares of Cerner common stock are listed for trading  under
the symbol "CERN" on the Nasdaq National Market.  The following table
sets  forth the quarterly high and low sales prices of Cerner  common
stock  as  reported on the Nasdaq National Market based on  published
financial  sources.   During the periods  covered  by  the  following
table,  Cerner has paid no cash dividends to holders of Cerner common
stock.

<TABLE>

                                                Cerner Common Stock
                                               ----------------------
                                                 High          Low
                                               --------      --------

Fiscal Year Ended January 2, 1999
  <S>                                          <C>           <C>
  First Quarter...........................     $24  9/16     $19 1/16
  Second Quarter..........................      29  15/16     20 7/8
  Third Quarter...........................      31  7/16      22
  Fourth Quarter..........................      27  1/16      20 1/2

</TABLE>


<TABLE>

Fiscal Year Ended January 1, 2000
  <S>                                          <C>          <C>
  First Quarter...........................     $27  1/4     $12  7/8
  Second Quarter..........................      23  1/2      12  1/2
  Third Quarter...........................      19  15/16    14  1/4
  Fourth Quarter..........................      20  3/4      12 15/16

</TABLE>

<TABLE>

Fiscal Year Ending December 31, 2000
  <S>                                          <C>          <C>
  First Quarter...........................     $40 7/8      $17 7/8
  Second Quarter..........................      32 1/8       19 3/4
  Third Quarter (through July 6, 2000)....      28 5/16      26 5/16

</TABLE>

      On  May 15, 2000, the last full trading day prior to the public
announcement  of  the merger, the reported closing  price  of  Cerner
common stock on the Nasdaq National Market was $25.13 per share.   On
July 6, 2000 (the latest practicable date prior to the printing
of  this proxy statement/prospectus), the reported closing price  was
$28.13.

                               -11-
_____________________________________________________________________

<PAGE>
_____________________________________________________________________

     The shares of CITATION common stock are listed for trading under
the symbol "CITA" on the Nasdaq National Market.  The following table
sets forth the quarterly high and low sales prices of CITATION common
stock  as  reported on the Nasdaq National Market based on  published
financial  sources.   During the periods  covered  by  the  following
table,  CITATION  has paid no cash dividends to holders  of  CITATION
common stock.

<TABLE>
                                                CITATION Common Stock
                                              -----------------------
                                                  High         Low
                                               ----------   ---------
Fiscal Year Ended March 31, 1999
  <S>                                            <C>          <C>
  First Quarter.......................           $9           $4
  Second Quarter......................            5            2 1/2
  Third Quarter.......................            3            1
  Fourth Quarter......................            4            1 1/2

</TABLE>

<TABLE>

Fiscal Year Ended March 31, 2000
  <S>                                            <C>          <C>
  First Quarter.......................           $3           $1  1/4
  Second Quarter......................            3 1/2        1  1/2
  Third Quarter.......................            3            1  1/8
  Fourth Quarter......................            5 5/8        1  25/32

</TABLE>

Fiscal Year Ending March 31, 2001
  First Quarter.......................           $4 3/4      $1 9/16
  Second Quarter (through July 6, 2000)           4 7/16      4 1/8

      On  May 15, 2000, the last full trading day prior to the public
announcement  of the merger, the reported closing price  of  CITATION
common  stock on the Nasdaq National Market was $3.00 per share.   On
July 6, 2000 (the latest practicable date prior to  the  printing
of  this proxy statement/prospectus), the reported closing price  was
$4.31.

                                -12-
_____________________________________________________________________

<PAGE>

                            RISK FACTORS

     You   should  carefully  consider  the  following  risk  factors
concerning  Cerner  in determining whether to  vote  to  approve  the
merger  and  the  transactions  contemplated  thereby.   This   proxy
statement/prospectus contains forward-looking statements that involve
risk  and  uncertainties.   You  can identify  these  forward-looking
statements  because  they  may  include  terms  such  as  "believes,"
"anticipates," "intends," "expects," or similar expressions  and  may
include  discussions of future strategy.  We caution you not to  rely
unduly   on   any   forward-looking   statements   in   this    proxy
statement/prospectus. Cerner's actual results could differ materially
from  the  forward-looking statements.  The  risk  factors  described
below could cause or contribute to these differences and apply to all
forward-looking  statements  wherever  they  appear  in  this   proxy
statement/prospectus.   However, there could  be  other  factors  not
listed  below that may affect Cerner.  We may not update  these  risk
factors  or publicly announce revisions to forward-looking statements
contained in this proxy statement/prospectus.

     Fixed  exchange  ratio  may  adversely  affect the value of your
shares.  If  the  merger is  completed, you  will receive a number of
shares of Cerner common stock based  on  a  fixed exchange  ratio  of
0.1695  shares of Cerner  common  stock  for  0.9 of  each  share  of
CITATION common stock.  Because the market value of the Cerner common
stock may fluctuate, the value  of  the  consideration  you   receive
for your CITATION  shares  may  also fluctuate.   The market value of
Cerner common stock could  fluctuate depending  upon  any  number  of
reasons, including those specific to Cerner and those that  influence
the  trading  prices  of  equity securities generally.

      Quarterly  operating  results  may  vary.   Cerner's  quarterly
operating results have varied in the past and may continue to vary in
future periods.  Quarterly operating results may vary for a number of
reasons including demand for Cerner's products and services, Cerner's
long sales cycle, the long installation and implementation cycle  for
these  large,  complex  and   costly  systems   and    other  factors
described herein.  As a result of healthcare industry trends and  the
market  for  Cerner's HNA Millennium products, a large percentage  of
Cerner's  revenues  are  generated by the sale  and  installation  of
large,   complex   and   costly   systems.    The sales  process  for
these  systems  is  lengthy  and  involves  a  significant  technical
evaluation  and  commitment of capital and  other  resources  by  the
customer.   The  sale  may  be subject to delays  due  to  customers'
internal   budgets  and  procedures  for  approving   large   capital
expenditures  and  by competing needs for other capital  expenditures
and deploying new technologies or personnel resources.  Delays in the
expected  sale or installation of these large contracts  may  have  a
significant  impact  on Cerner's anticipated quarterly  revenues  and
consequently its earnings, since a significant percentage of Cerner's
expenses are relatively fixed.

      These  large,   complex   and   costly  systems  are  installed
and  implemented  over  time periods ranging from  approximately  six
months  to three years and involve significant efforts both by Cerner
and   the  client.   In  addition,  implementation  of  Cerner's  HNA
Millennium products is a new and evolving process.  Cerner recognizes
license  revenue upon the completion of standard milestone conditions
and  the  amount  of revenue recognized in any quarter  depends  upon
Cerner's  and the clients' ability to meet these project  milestones.
Delays  in meeting these milestone conditions or modification of  the
contract relating to one or more of these systems could result  in  a
shift  of  revenue recognition from one quarter to another and  could
have  a  material  adverse  effect on results  of  operations  for  a
particular  quarter.  In addition, support payments  by  clients  for
Cerner's products do not commence until the product is in use.

     Cerner's revenues from system sales historically have been lower
in the first quarter of the year and greater in the fourth quarter of
the year.

      Cerner's  stock  price may be volatile.  The trading  price  of
Cerner's  common  stock  may be volatile.  The  market  for  Cerner's
common stock may experience significant price and volume fluctuations
in  response  to a number of factors including actual or  anticipated
quarterly variations in operating results, changes in expectations of
future  financial  performance, changes in  estimates  of  securities
analysts, governmental regulatory action, healthcare reform measures,
client relationship developments and other factors, many of which are
beyond Cerner's control.

      Furthermore,  the stock market in general, and the  market  for
software, healthcare and high technology companies in particular, has
experienced extreme volatility that often has been unrelated  to  the
operating  performance of particular companies.  These  broad  market
and  industry fluctuations may adversely affect the trading price  of
Cerner's common stock, regardless of actual operating performance.

      Market  risk  may  affect  Cerner's  investment  holdings   and
results of operations.  Cerner accounts for its investments in equity
securities which have  readily determinable fair values as available-
for-sale.  Available-for-sale securities are  reported  at fair value
with unrealized gains and losses  reported, net of tax, as a separate
component of

<PAGE>                           -13-

accumulated other comprehensive  income. I nvestments in  the  common
stock  of certain  affiliates over  which  Cerner exerts  significant
influence  are accounted for by the equity   method.  Investments  in
other  equity securities  are reported at cost. All equity securities
are  reviewed by  Cerner periodically for  declines in fair value. If
such  declines are  considered  to  be other than temporary, the cost
basis of the individual  security is written down to fair value as  a
new cost  basis, and  the amount of the write-down is charged against
earnings.

      Included in Cerner's investments is the ownership of 13,149,259
shares  (18.7%  of  the  outstanding shares)   of  common  stock,  of
CareInsite, Inc. ("CareInsite"), formerly known as Synetic Healthcare
Communications,  Inc., which had a cost basis of  $81,804,000  and  a
carrying value of $307,364,000 at April 1, 2000.  12,437,500 of these
shares were received in 1998 as consideration for the sale of license
software,  and an additional 711,759 shares were purchased  in  1999.
The value assigned to the shares acquired in 1998 was $70,000,000 and
was  based on a methodology which utilized both a comparable  company
and  the  expected underlying discounted future cash flows.  On  June
16,  1999, CareInsite underwent an initial public offering of  common
stock.  The common stock of CareInsite is traded in the public market
and  listed  on the Nasdaq National Market.  The stock of  CareInsite
held  by  Cerner is not registered and is subject to certain  lock-up
provisions.  A permanent impairment in the value of CareInsite common
stock would result in a charge to earnings in either the then current
or  future  periods.  There would be no effect on cash flows  because
the revenue was earned through contractual rights granted in exchange
for  CareInsite  stock.  An increase in the value of  the  CareInsite
stock  would  have no effect on reported earnings.   Cerner  has  not
engaged  in  equity swaps or other hedging techniques to  manage  the
equity risk inherent in the CareInsite shares.

      Under  Statement  of  Financial Accounting  Standards  No.  115
"Accounting  for  Certain Investments in Debt and Equity  Securities"
(SFAS  No.  115), Cerner is required to mark to market  those  shares
which  are  classified as available-for-sale.  As of July   1,  2000,
Cerner  has  marked  to  market all 13,149,259 shares  of  CareInsite
common  stock,  with  a  market  value  of  $235,043,000,  that   are
considered available-for-sale under SFAS No.115.

      If  Cerner  realizes  certain performance  metrics  related  to
specified levels of physician usage, CareInsite will issue to  Cerner
2,503,125  additional shares  of  common stock at a  price  of   $.01
per share ("Performance Shares"). The measurement date is February 15,
2001.  No   amounts  have   been   recognized   in  the  consolidated
financial  statements  for   the   Performance   Shares   due  to the
uncertainty of  the future events.

      Cerner was also granted, by CareInsite, 1,008,445 common  stock
warrants   with  an  exercise  price  of  $4.00  per  share   ("THINC
Warrants").  The THINC  Warrants were exercisable only in  the  event
that  The  Health  Information  Network  Connections,  LLC  ("THINC")
exercised  warrants granted to it by CareInsite at $4.00  per  share.
THINC was allowed to exercise its warrants 180 days after the initial
public  offering  of  CareInsite.  On  January  29,  2000  CareInsite
completed  an  acquisition of THINC.   As  part  of  that  agreement,
806,756   of   the   1,008,445  THINC  Warrants  became   immediately
exercisable, with the remaining amount forfeited. The THINC  Warrants
expire in three years.

      On  February  13, 2000 CareInsite entered into an agreement  to
merge  with Healtheon/Web MD Corporation ("Web MD Merger Agreement").
As  part  of  the  Web MD Merger Agreement, Cerner will  receive  1.3
shares  of  Healtheon/Web MD Corporation in exchange for each  common
share  of  CareInsite  held by Cerner.  In addition  the  Performance
Shares will be adjusted at  a rate of 1.3 shares of Healtheon/Web  MD
Corporation  for  each share of CareInsite.  All physician  users  of
systems  of Healtheon/Web MD Corporation or its affiliates  shall  be
included  for  purposes  of  determining  the  specified  levels   of
physician usage.  The THINC Warrants will also be adjusted at a  rate
of  1.3  shares  of Healtheon/Web MD Corporation for  each  share  of
CareInsite.   The proposed merger of CareInsite and Healtheon/Web  MD
Corporation   ("Web  MD  Merger")  is  subject  to  shareholder   and
regulatory  approval.  There is no guarantee the Web MD  Merger  will
close.

      Cerner has agreed under terms of the Web MD Merger Agreement to
certain lock-up provisions, which differ from the terms of its  lock-
up  provisions  with CareInsite.  The Web MD Merger  is  expected  to
close  in the second or third quarter of 2000.  If the Web MD  Merger
closes  Cerner  will  record the Healtheon/Web MD Corporation  shares
received  at  their  then  fair value and recognize  a  gain  on  the
disposition  of  the  CareInsite shares.  Based on  proposed  lock-up
provisions,  50%  of  the Healtheon/Web MD Corporation  shares  would
thereafter  be considered available-for-sale and would be  marked  to
market at each balance sheet date.  The remainder would be carried at
cost  until the third quarter of 2000, at which time these  remaining
shares would be considered available-for-sale.

      Cerner also is exposed to market risk from changes in the value
of  marketable  securities  (which  consist  of   money   market  and
commercial paper).  At April 1, 2000, marketable securities of Cerner
were recorded at cost, which approximates fair value of approximately
$94 million, with  an overall  average return of approximately 5% and
an overall

<PAGE>                         -14-

weighted maturity  of  less than 90 days.   The marketable securities
held  by  Cerner  are  not  subject  to price risk as a result of the
short-term nature of the investments.

      Cerner is not exposed to material future earnings or cash  flow
exposures from changes in interest rates on long-term debt since 100%
of  its  long-term debt is at a fixed rate.  To date, Cerner has  not
entered  into any derivative financial instruments to manage interest
rate risk.

      Cerner  conducts  business  in several  foreign  jurisdictions.
However,  the business transacted is in the local functional currency
and  Cerner does not currently have any material exposure to  foreign
currency   transaction   gains  or  losses.    All   other   business
transactions  are in U.S. dollars.  To date, Cerner has  not  entered
into  any  derivative financial instrument to manage foreign currency
risk  and  is  currently not evaluating the future use  of  any  such
financial instruments.

      Changes in the healthcare industry may adversely affect Cerner.
The  healthcare  industry  is  highly regulated  and  is  subject  to
changing political, economic and regulatory influences.  For example,
the  Balanced  Budget  Act  of  1997  (Public  Law  105-32)  contains
significant  changes to Medicare and Medicaid and began to  have  its
initial impact in 1998 due to limitations on reimbursement, resulting
cost  containment initiatives, and effects on pricing and demand  for
capital  intensive  systems.   These factors  affect  the  purchasing
practices  and  operation of healthcare organizations.   Federal  and
state legislatures have periodically considered programs to reform or
amend  the U.S. healthcare system at both the federal and state level
and  to change healthcare financing and reimbursement systems.  These
programs  may contain proposals to increase governmental  involvement
in  healthcare,  lower  reimbursement rates or otherwise  change  the
environment  in  which  healthcare  industry  participants   operate.
Healthcare  industry  participants  may  respond  by  reducing  their
investments or postponing investment decisions, including investments
in Cerner's products and services.

     Many healthcare providers are consolidating to create integrated
healthcare  delivery  systems  with  greater  market  power.    These
providers  may  try  to  use their market power  to  negotiate  price
reductions  for  Cerner's products and services.  As  the  healthcare
industry  consolidates,  Cerner's  customer  base  could  be  eroded,
competition  for  customers  could  become  more  intense   and   the
importance of acquiring each customer becomes greater.

     Significant competition may adversely affect Cerner.  The market
for  healthcare information systems is intensely competitive, rapidly
evolving  and subject to rapid technological change.  Cerner believes
that  the  principal competitive factors in this market  include  the
breadth and quality of system and product offerings, the stability of
the  information  systems provider, the features and capabilities  of
the  information systems, the ongoing support for the system, and the
potential for enhancements and future compatible products.

       Certain   of  Cerner's  competitors  have  greater  financial,
technical,  product development, marketing and other  resources  than
Cerner  and some of its competitors offer products that it  does  not
offer.    Cerner's  principal  existing  competitors  include  Shared
Medical Systems Corporation, IDX Systems Corporation, McKesson  HBOC,
Inc.  and  Eclipsys  Corporation, each of which  offers  a  suite  of
products  that  compete with many of Cerner's  products.   There  are
other  competitors  that  offer a more limited  number  of  competing
products.

      In  addition,  Cerner  expects that major software  information
systems  companies,  large information technology consulting  service
providers  and system integrators, Internet-based start-up  companies
and   others  specializing  in  the  healthcare  industry  may  offer
competitive  products  or  services.   The  pace  of  change  in  the
healthcare information systems market is rapid and there are frequent
new product introductions, product enhancements and evolving industry
standards  and  requirements.   As a result,  Cerner's  success  will
depend upon its ability to keep pace with technological change and to
introduce,  on  a timely and cost-effective basis, new  and  enhanced
products  that  satisfy  changing customer requirements  and  achieve
market acceptance.

      Proprietary technology may be subjected to infringement  claims
or  may be infringed upon.  Cerner relies upon a combination of trade
secret,   copyright   and   trademark   laws,   license   agreements,
confidentiality  procedures,  employee nondisclosure  agreements  and
technical  measures to maintain the trade secrecy of its  proprietary
information.   Cerner has not historically filed patent  applications
or  copyrights covering its software technology.  As a result, Cerner
may   not  be  able  to  protect  against  misappropriation  of   its
intellectual property.

      In  addition, Cerner could be subject to intellectual  property
infringement  claims  as  the number of  competitors  grows  and  the
functionality  of  its products overlaps with competitive  offerings.
These  claims, even if not meritorious, could be expensive to defend.
If  Cerner  becomes  liable  to third parties  for  infringing  their
intellectual  property  rights,  it

<PAGE>                          -15-

could  be  required to pay a substantial damage award  and to develop
noninfringing  technology, obtain  a  license  or  cease  selling the
products  that  contain  the infringing intellectual property.

      Government  regulation  could increase  the  cost  of  Cerner's
products.  The United States Food and Drug Administration (the "FDA")
has  declared that software products intended for the maintenance  of
data  used  in  making decisions regarding the suitability  of  blood
donors  and  the release of blood or blood components for transfusion
are  medical  devices under the Federal Food, Drug and  Cosmetic  Act
("Act")  and  amendments  to the Act.  As a  consequence,  Cerner  is
subject  to extensive regulation by the FDA with regard to its  blood
bank  software.  If other Cerner products are deemed to  be  actively
regulated  medical  devices by the FDA, Cerner could  be  subject  to
extensive requirements governing pre- and post-marketing requirements
including   premarket  notification  clearance  prior  to  marketing.
Complying  with  these FDA regulations would be  time  consuming  and
expensive.   It  is possible that the FDA may become more  active  in
regulating computer software that is used in healthcare.

      Following  an  inspection by the FDA in March of  1998,  Cerner
received  a  Form  FDA  483  (Notice  of  Inspectional  Observations)
alleging non-compliance with certain aspects of FDA's Quality  System
Regulation   with  respect  to  Cerner's  PathNet  HNAC  Blood   Bank
Transfusion  and Donor products (the "Blood Bank Products").   Cerner
subsequently received a Warning Letter, dated April 29,  1998,  as  a
result of the same inspection.  Cerner responded promptly to the  FDA
and  undertook a number of actions in response to the  Form  483  and
Warning Letter including an audit by a third party of Cerner's  Blood
Bank Products and improvements to Cerner's Quality System.  A copy of
the  third  party audit was submitted to the FDA in October  of  1998
and,   at  the  request  of  the  FDA,  additional  information   and
clarification was submitted to the FDA in January of 1999.

      There can be no assurance, however, that Cerner's actions taken
in  response  to  the  Form 483 and Warning  Letter  will  be  deemed
adequate  by the FDA or that additional actions on behalf  of  Cerner
will  not  be  required.   In  addition, Cerner  remains  subject  to
periodic  FDA inspections and there can be no assurances that  Cerner
will  not be required to undertake additional actions to comply  with
the  Act  and  any  other  applicable regulatory  requirements.   Any
failure  by  Cerner to comply with the Act and any  other  applicable
regulatory  requirements  could have a  material  adverse  effect  on
Cerner's  ability  to  continue  to manufacture  and  distribute  its
products.    FDA  has  many  enforcement  tools  including   recalls,
seizures, injunctions, civil fines and/or criminal prosecutions.  Any
of  the  foregoing would have a material adverse effect  on  Cerner's
business, results of operations or financial condition.

     Product related liabilities could affect the financial condition
of  Cerner.   Many  of  Cerner's products provide  data  for  use  by
healthcare providers in providing care to patients.  Although no such
claims  have  been brought against Cerner to date regarding  injuries
related  to the use of its products, such claims may be made  in  the
future.    Although  Cerner  maintains  product  liability  insurance
coverage  in  an  amount  that  it believes  is  sufficient  for  its
business, there can be no assurance that such coverage will prove  to
be  adequate or that such coverage will continue to remain  available
on  acceptable terms, if at all.  A successful claim brought  against
Cerner which is uninsured or under-insured could materially harm  its
business, results of operations or financial condition.

      System  errors  and  warranties could  cause  Cerner  to  incur
additional  expense  under  certain  contracts.   Cerner's   systems,
particularly the HNA Millennium versions, are very complex.  As  with
complex  systems  offered  by others, Cerner's  systems  may  contain
errors,  especially when first introduced.  Although Cerner  conducts
extensive testing, it has discovered software errors in its  products
after  their introduction.  Cerner's systems are intended for use  in
collecting and displaying clinical information used in the  diagnosis
and  treatment of patients.  Therefore, users of Cerner products have
a  greater sensitivity to system errors than the market for  software
products  generally.  Cerner's agreements with its clients  typically
provide   warranties  against  material  errors  and  other  matters.
Failure  of a client's system to meet these criteria could constitute
a  material breach under such contracts allowing the client to cancel
the contract, or could require Cerner to incur additional expense  in
order  to  make  the system meet these criteria.  Cerner's  contracts
with its clients generally limit Cerner's liability arising from such
claims   but   such  limits  may  not  be  enforceable   in   certain
jurisdictions.

     Anti-takeover defenses may delay or prevent  the  acquisition of
Cerner.  Cerner's  charter,  bylaws,  shareholders'  rights  plan and
certain  provisions  of  Delaware law contain certain provisions that
may  have  the  effect  of  delaying  or preventing an acquisition of
Cerner.   Such  provisions  are  intended  to  encourage  any  person
interested  in  acquiring  Cerner  to  negotiate  with and obtain the
approval of the Cerner board in connection with any such transaction.
These  provisions  include (i) a board of directors that is staggered
into  three  classes  to serve staggered three-year terms, (ii) blank
check  preferred  stock,  (iii) supermajority voting provisions, (iv)
inability of stockholders to act by written consent or call a special
meeting,  (v)  limitations on the ability of stockholders to nominate
directors  or  make  proposals  at  stockholder

<PAGE>                         -16-

meetings, and (vi) triggering the exercisability of  stock   purchase
rights on a discriminatory basis, which may invoke extensive economic
and  voting  dilution  of  a  potential  acquirer  if  its beneficial
ownership of Cerner's common  stock  exceeds  a  specified threshold.
Certain of these  provisions  may  discourage a future acquisition of
Cerner   not   approved   by   the   Cerner  board  in  which  Cerner
shareholders might receive a premium value for their shares.

	The  Year  2000 transition may impact the operations of Cerner.
As  of  the  date  of this proxy statement/prospectus, Cerner has not
seen  any  adverse  impact as a result of the Year 2000 transition on
any   of   its   systems  or  those  of  its  clients  or  suppliers.
Nonetheless,  Cerner  will  continue  to  monitor  the  effect of the
Year  2000  transition,  and  there can be no absolute assurance that
Year  2000  issues  will  not  materialize  in  the future and have a
material adverse effect on Cerner, its products or its operations.

                       RECENT DEVELOPMENTS

     As of April 1, 2000 Cerner owned 50% of Health Network  Ventures,
Inc.("HNV"), a joint venture investment  which is  accounted for under
the equity  method.

     In  April  2000  Cerner  purchased  the  remaining  50%  of  the
outstanding  common  stock of HNV for $8  million.   The  acquisition
was  accounted  for  using  the  purchase  method.  Subsequent to the
acquisition,  Cerner  has  determined  that it  will  shut  down  the
portion  of  the  business  focused  on individual physician practice
connectivity  and  transaction  processing  given that it is Cerner's
strategy to use CareInsite to process transactions.  As  a  result of
this  decision,  Cerner  will  record  a non-recurring charge in  the
second  quarter  of  2000  in  the  amount of  $7  million related to
an impairment of goodwill associated with the HNV purchase.

Cerner  also  purchased  the  assets  of  Mitch Cooper and Associates
for  $2   million  in  April  2000.  Mitch Cooper & Associates  is  a
supply  chain re-engineering consulting practice. The acquisition was
accounted for using the purchase method of accounting. The allocation
of  the  purchase  price  to  the estimated fair values of identified
tangible  and  intangible  assets  acquired  and  liabilities assumed
resulted in goodwill of $2 million.   The goodwill is being amortized
over five years.

                      CITATION SPECIAL MEETING

Date, Time and Place

      This  proxy  statement/prospectus  is  first  being  mailed  by
CITATION  to its  shareholders  on  or  about July 12, 2000,  and  is
accompanied by a form of proxy solicited by the board of directors of
CITATION  for  use at the CITATION special meeting,  to  be  held  on
August 17,  2000  at  10:00  a.m.,  local  time, at 11 South Meramac,
Clayton, Missouri, and at any adjournments  or postponements of  that
meeting.

Matters to Be Considered

     At  the  CITATION special meeting, you will be asked to  approve
and  adopt the merger agreement and the transactions contemplated  by
that agreement, including the merger, and to act on any other matters
that  may  be  properly submitted to a vote at the  CITATION  special
meeting.   You may also be asked to vote on a proposal to adjourn  or
postpone  the  CITATION  special meeting.   CITATION  could  use  any
adjournment  or postponement of the special meeting for the  purpose,
among  others, of allowing additional time for soliciting  additional
votes to approve and adopt the merger agreement.

Record Date; Stock Entitled to Vote; Quorum

     The  CITATION  board of directors has established the  close  of
business   on   July  6 ,  2000   as  the  date  to  determine  those
record holders of CITATION common stock entitled to notice of and  to
vote  at  the  CITATION  special  meeting.   On that date, there were
3,881,230  shares  of  CITATION  common  stock  outstanding  held  by
approximately 159 holders  of  record.  A  majority  of the shares of
CITATION  issued  and  outstanding  and  entitled  to  vote   on  the
record  date must be represented  in person or by proxy at CITATION's
special  meeting  in order for a quorum to be present for purposes of
transacting business at  the  meeting.  In the event that a quorum is
not present at the meeting,  it  is  expected  that the meeting  will
be  adjourned  or postponed  to  solicit  additional proxies. Holders
of  record  of  CITATION  common  stock  on  the record date are each
entitled  to  one  vote  per share on each matter to be considered at
CITATION's special meeting.

<PAGE>                        -17-

Vote Required

     The  approval  of  the  merger agreement  and  the  transactions
contemplated thereby requires the affirmative vote of the holders  of
at  least  two-thirds of the outstanding shares  of  CITATION  common
stock  entitled to vote at the CITATION special meeting.  Abstentions
and  broker non-votes will have the same effect as votes against  the
merger agreement.  Accordingly, the CITATION board of directors urges
CITATION's  shareholders to complete, date and sign the  accompanying
proxy  and return it promptly in the enclosed, postage-paid envelope.
Shareholders of Cerner are not required to approve the merger and the
transactions contemplated thereby.

Security Ownership of Management

     As of the CITATION record date, directors and executive officers
of  CITATION  owned or controlled approximately 1,133,290  shares  of
CITATION common stock, entitling them to exercise approximately 29.3%
of  the voting power of the CITATION common stock entitled to vote at
the  CITATION  special  meeting.  Each of the directors  and  certain
executive  officers  of  CITATION have entered  into  a  shareholders
agreement  with Cerner pursuant to which such shareholders agreed  to
vote all  of  their shares in favor of the merger and grant an option
to Cerner to purchase all their shares  under  certain circumstances.

Voting of Proxies

     Submitting Proxies.  CITATION shareholders may vote their shares
in  person by attending the special meeting or by proxy by completing
the enclosed proxy card, including signature and date, and mailing it
to   us  in  the  enclosed  postage-paid  envelope.   IF  A  CITATION
SHAREHOLDER   SIGNS  AND  RETURNS  A  WRITTEN  PROXY   CARD   WITHOUT
INSTRUCTIONS, THE SHARES REPRESENTED BY THE PROXY WILL BE COUNTED  AS
A VOTE FOR THE MERGER AND THE TRANSACTIONS CONTEMPLATED THEREBY.
       ---

     For CITATION shareholders whose shares are held in "street name"
(i.e.,  in  the name of a broker, bank or other record  holder),  not
returning a proxy card or directing the record holder of their shares
as  to  how to vote their shares will have the same effect as  voting
those shares against the merger.

     Revoking  Proxies.  CITATION shareholders of record  may  revoke
their  proxies  at  any time before their proxies are  voted  at  the
special  meeting.  Proxies may be revoked by (1) submitting a written
revocation to the Corporate Secretary of CITATION, (2) duly executing
another  valid  proxy  bearing a later  date  or  (3)  attending  the
CITATION  special  meeting  and voting in  person.   A  shareholder's
attendance at the CITATION special meeting will not by itself  revoke
a proxy, the shareholder must obtain a ballot and vote at the special
meeting.   CITATION shareholders of record should address any  change
or revocation to:

       CITATION Computer Systems, Inc.
       424 South Woods Mill Road, Suite 200
       Chesterfield, Missouri  63017
       Attention:  Richard D. Neece, Secretary

     General  Information.   Abstentions  may  be  specified  on  the
proposal.  Shares of CITATION common stock represented at the special
meeting  for  which proxies have been received, but with  respect  to
which  shareholders have abstained on any matter, will be treated  as
present  at  the  special  meeting for purposes  of  determining  the
presence  or absence of a quorum for the transaction of all business.
An  abstention or a broker non-vote will have the same  effect  as  a
vote against the merger and the transactions contemplated thereby.

     CITATION  is  not aware of any matters expected to be  presented
for  consideration  at  the special meeting  other  than  the  merger
agreement  and the transactions contemplated thereby.  If  any  other
matters  are  properly presented, the persons named as  proxies  will
vote  in  accordance with their best judgment with  respect  to  such
matters,  unless  authorization to use that discretion  is  withheld.
However,  no  proxy  having  instructions   to   vote   against   the
adoption of the  merger agreement  and  the transactions contemplated
thereby will be voted in favor of a motion to adjourn or postpone the
meeting  to another time or place.

     CITATION will bear the cost of the solicitation of proxies.   In
addition  to  solicitation  by  mail,  the  directors,  officers  and
employees  of  CITATION, who will receive no compensation  for  their
services other than their regular salaries,

<PAGE>                          -18-

may also solicit  proxies from shareholders  by  telephone, telecopy,
telegram or in person.   In addition,  CITATION may  engage brokerage
houses and other  custodians, nominees  and  fiduciaries  to  forward
copies of these proxy  materials to  those persons for whom they hold
shares, and in that event, incur additional costs.

     SHAREHOLDERS WHO SUBMIT PROXY CARDS SHOULD NOT SEND IN ANY STOCK
CERTIFICATES  WITH THEIR PROXY CARDS.  A letter of  transmittal  with
instructions for the surrender of certificates representing shares of
CITATION  common stock will be mailed by Cerner's transfer  agent  to
former CITATION shareholders shortly after the merger is completed.

                             THE MERGER

     The following description of the material information pertaining
to  the  merger, including the material terms and provisions  of  the
merger agreement and the related shareholders agreement, is qualified
in  its entirety by reference to the more detailed Appendices to this
proxy   statement/prospectus,  including  the  merger  agreement   in
Appendix A and the shareholders agreement in Appendix C. We urge  you
to read the Appendices in their entirety.

General

     CITATION  is  furnishing this document to  its  shareholders  in
connection with the solicitation of proxies by its board of directors
for use at its special meeting of its shareholders.

     At  the  CITATION  shareholders' meeting,  holders  of  CITATION
common  stock will be asked to vote on the approval and  adoption  of
the  merger agreement and the transactions contemplated thereby.  The
number  of  shares needed to approve this proposal is at  least  two-
thirds  of  the  shares  outstanding  on  July  6,  2000.    Pursuant
to  the shareholders agreement, holders of approximately 29.3% of the
outstanding shares of CITATION common stock have agreed to vote their
shares  in  favor  of  the  merger  agreement  and  the  transactions
contemplated thereby.   The  merger  will  not  be  completed  unless
the  merger  agreement  and  the  transactions  contemplated  thereby
are approved  and adopted by the CITATION shareholders.

     The  Cerner  board  of  directors  and  the  CITATION  board  of
directors each have unanimously approved the merger agreement,  which
provides  for the merger of CITATION with and into Cerner Performance
Logistics,  Inc.,  a  wholly-owned  subsidiary  of  Cerner.    Cerner
Performance Logistics, Inc. will be the surviving corporation in  the
merger, and its certificate of incorporation and bylaws will  be  the
certificate  of  incorporation and bylaws of  the  combined  company.
Upon  consummation of the merger, the shareholders of  CITATION  will
become shareholders of Cerner and the separate corporate existence of
CITATION  will  terminate.  Each outstanding share of  Cerner  common
stock  will  remain  outstanding and unchanged as  a  result  of  the
merger.   The name of the surviving company will be Cerner  Citation,
Inc., which will be a wholly-owned subsidiary of Cerner.

Exchange of CITATION Shares

     If  you are a record holder of CITATION common stock immediately
prior to the effective time of the merger and the merger proposal  is
approved,  ninety  percent  of  your CITATION  shares  will  each  be
converted  into 0.1695 shares of Cerner common stock and ten  percent
of  your  CITATION shares will each be converted into  the  right  to
receive $5.10 cash.

     Because the exchange ratio is fixed and because the market price
of  Cerner common stock may fluctuate prior to the effective time  of
the  merger,  the  value of the shares of Cerner  common  stock  that
holders  of  CITATION common stock will receive  in  the  merger  may
increase or decrease prior to and following the merger.

     No  fractional shares of Cerner common stock will be  issued  to
any  holder  of CITATION common stock upon completion of the  merger.
For each fractional share that would otherwise be issued, Cerner will
pay in cash an amount equal to the fraction multiplied by the average
of  the closing sale prices of Cerner common stock as reported on the
Nasdaq  National  Market  for  the twenty  consecutive  trading  days
immediately preceding the third trading day prior to the closing date
of  the  merger.  No interest will be paid or accrued on cash payable
to holders in lieu of fractional shares.

     For  a description of the differences between the rights of  the
holders  of  CITATION common stock and the holders of  Cerner  common
stock, see "Comparative Rights of Shareholders" on page 51.

<PAGE>                           -19-

Stock Options

     Each outstanding option to acquire CITATION common stock granted
under  any CITATION stock option or incentive plans will be converted
automatically at the effective time of the merger into an  option  to
purchase Cerner common stock and will continue to be governed by  the
terms  of the CITATION stock plan and related grant agreements  under
which it was granted, except that:

          the  number of shares of Cerner common stock subject to  the
          new Cerner stock option will be equal to the product of the
          number  of shares of CITATION common stock subject  to  the
          CITATION  stock  option  and the exchange  ratio  (0.1695),
          rounded to the nearest whole share, and

          the  exercise price per share of Cerner common stock subject
          to  the  new  Cerner  stock option will  be  equal  to  the
          exercise price per share of CITATION common stock under the
          CITATION  stock  option  divided  by  the  exchange   ratio
          (0.1695), rounded to the nearest one-hundredth of a cent.

     In  any  event,  stock options that are incentive stock  options
under the Internal Revenue Code of 1986, as amended, will be adjusted
in the manner prescribed by the Internal Revenue Code.

Exchange of Stock Certificates

     At or prior to the completion of the merger, Cerner will deposit
with  UMB  Bank, n.a. certificates representing the shares of  Cerner
common stock to be issued in connection with the merger, the cash  in
lieu of any fractional shares to be issued in the merger and cash  in
an  amount  equal to the cash portion of the merger consideration  in
exchange for outstanding shares of CITATION common stock.  UMB  Bank,
n.a. will act as the exchange agent for the benefit of the holders of
certificates of CITATION common stock.

     Promptly  after  the  completion  of  the  merger,  a  form   of
transmittal letter will be mailed by UMB Bank, n.a. to each  CITATION
shareholder.   This transmittal letter will contain instructions  for
the  surrender of certificates representing CITATION common stock  in
exchange  for  shares of Cerner common stock, cash consideration  and
any cash in lieu of fractional shares.

     You  should  not
                  --- return your CITATION common stock  certificates
with the enclosed proxy card, and you should not
                                             --- forward them to  the
exchange  agent  until  you  receive a letter  of  transmittal  after
completion of the merger.

     Until  you  surrender  your  CITATION  stock  certificates   for
exchange after completion of the merger, you will accrue but will not
be  paid  any  dividends or other distributions  declared  after  the
effective time of the merger with respect to Cerner common stock into
which  your  shares  have been converted.  When  you  surrender  your
certificates,  Cerner  will  pay  any  unpaid  dividends   or   other
distributions,  without interest.  After the effective  time  of  the
merger,  there  will be no transfers on the stock transfer  books  of
CITATION  of  any  shares of CITATION common stock.  If  certificates
representing  shares  of  CITATION common  stock  are  presented  for
transfer  after the completion of the merger, they will be  cancelled
and exchanged for a certificate representing the applicable number of
shares of Cerner common stock, the cash consideration and any cash in
lieu of fractional shares.

     If  a certificate of CITATION common stock has been lost, stolen
or  destroyed,  the  exchange  agent  will  issue  the  consideration
properly   payable  under  the  merger  agreement  upon  receipt   of
appropriate   evidence  as  to  that  loss,  theft  or   destruction,
appropriate   evidence as to the ownership of  that  certificate   by
the   claimant,   and   appropriate  and   customary  indemnification
and/or  a bond.

Background of the Merger

      CITATION's  board regularly has considered various alternatives
for  increasing  shareholder value.  For example,  in  January  1998,
CITATION  received an unsolicited expression of interest to pursue  a
business  combination  from  a third  party.   In  response  to  this
development, the CITATION board engaged an investment banking firm to
evaluate  the offer and explore strategic alternatives.  Pursuant  to
the  advice  of the investment banking firm, from March 1998  through
June 1998 CITATION informally inquired whether selected strategic and
financial  parties  would  possibly have  an  interest  in  acquiring
CITATION.

<PAGE>                             -20-

      In  June 1998, CITATION sold its financial systems business and
customer base to Sterling Systems of Downey, Idaho, in order to focus
on  its laboratory and clinical systems.  The sale was the result  of
the strategic review undertaken by the investment banking firm.

      In  June  1998, in furtherance of the results of the  strategic
review,  CITATION announced that it was in discussions  with  MEDASYS
Medical Systems about a possible business combination.  MEDASYS was a
leading   provider  of  medical  imaging  systems  in   Europe   with
approximately 400 customers in the United States.  In September 1998,
CITATION  entered  into an agreement and plan of reorganization  with
MEDASYS.  In December 1998, the parties terminated the agreement  due
to  market  conditions and worse than expected operating  results  of
MEDASYS.

     CITATION's business consists of providing laboratory and related
clinical   healthcare  information  systems  primarily   to   smaller
hospitals  and clinics.  In June 1998, CITATION introduced a  Windows
NT  based  system  which operated in a client/server environment  and
required substantial investments in programming.  Although CITATION's
Windows  NT system has been well received, its board determined  that
existing market saturation and the consolidation taking place in  its
industry created inherent limitations on CITATION's ability  to  grow
internally.  Similarly, CITATION's board believes that the relatively
small size of CITATION makes growth by acquisition very difficult.

       As   CITATION  was  executing  its  business  strategies,  its
management  and  board  of directors came to realize  that  continued
growth  would  require  significant amounts  of  additional  capital.
CITATION's  board  further  realized that  accessing  the  additional
capital required would be relatively expensive because of the lack of
stock  market  interest  in small-capitalization  companies  such  as
CITATION.   As  a  result of this, from August 1999  through  January
2000, CITATION explored with various third parties the possibility of
business  combinations  or  alliances.  These  efforts  generated  an
interest by a party interested in a potential business combination.

      At  a special board meeting on March 8, 2000, senior management
briefed the CITATION board on the interest of a privately held  third
party  from  outside the United States in acquiring  CITATION.   That
party  initially  expressed interest in purchasing the  ownership  of
CITATION's  principal shareholders at a premium to the market  price.
The CITATION board then directed CITATION's chairman and president to
pursue  discussions with the third party based upon an offer  to  all
shareholders, which they did.

      During  the period  that  the  discussions with the third party
were ongoing an investment banker  with  whom  CITATION had consulted
contacted  Cerner  and  other  potential  acquirors.   Of the persons
contacted,  only  Cerner   expressed   an   interest  in  pursuing  a
transaction.      On March 22, 2000, the investment banker introduced
CITATION  to  Cerner.   On   March   23,  2000,  Cerner's  president,
laboratory   enterprise   managing   director,   vice   president  of
finance and business development manager met with CITATION's chairman
and  president  and agreed   to  proceed  with  discussions regarding
Cerner's  acquiring CITATION.

      Thereupon,  CITATION entered into preliminary discussions  with
Cerner  and  continued  discussions with the other  party  which  had
expressed interest in acquiring an ownership interest in CITATION.

      On  March  27, 2000, Cerner's president, laboratory  enterprise
managing director, vice president of finance and business development
manager  came to St. Louis to review CITATION's products and  product
strategy.

      On  March 29, 2000, Cerner presented management with a  written
proposal to acquire CITATION at a per share price of $4.00 if paid in
Cerner stock or $4.50 if paid in cash.

      During  this  period, CITATION's chairman  and  president  held
various meetings and telephone conversations with representatives  of
Cerner,  as  well  as representatives of the other  interested  party
which  eventually  suggested that such other party  was  prepared  to
acquire  the entire ownership interest of CITATION.  Such third party
made informal indications of the per share price such party would  be
willing to pay, which prices  were  approximately  comparable  to the
prices discussed by Cerner. Such third party made no formal offers or
binding  commitments  and  indicated that a transaction would involve
all cash, but  also indicated a need to obtain necessary financing to
consummate the transaction.   During  the  negotiations,   CITATION's
management  came  to the conclusion that the other  party's  apparent
resources  made  the  likelihood of  a  transaction  with  it  highly
uncertain,  leading   management,  in   light   of  the  unsuccessful
transaction attempted in 1998 and its adverse effect on CITATION,  to
the  conclusion  that  the  Cerner  proposal  represented  a superior
transaction.

      On  March  31,  2000, the CITATION board held  another  special
meeting for the purpose of being updated as to the current status  of
the  discussions  with Cerner and the other party regarding  possible
business combinations.  Management

<PAGE>                           -21-

reviewed  for  the  board  the  results  of  recent  discussions  and
indicated that while discussions with the other party would continue,
in its opinion there was not significant progress  being  made toward
a  transaction  with  that  party  that  the  board  would   consider
acceptable.  Management then reviewed the status of  discussions with
Cerner, including the written proposal received from  Cerner on March
29, 2000.   Management  also  reviewed  its internal valuation models
using several sets of assumptions to establish a basis for  analyzing
various  approaches   to   valuation   for  purposes  of  a  business
combination transaction. Each director was presented with a packet of
financial  and  business  information relating to Cerner.  Management
indicated to the board that discussions  thus far were very promising
and  asked  the  board  for  input  as  to  how  to negotiate certain
financial terms, with  a view  to  developing  a  proposed definitive
agreement to be submitted to the board for approval at  a later time.
The board authorized management to:(1) solicitproposals from selected
qualified investment bankers  relating to the issuance of  a fairness
opinion on the  terms  of  a  possible  business combination; and (2)
proceed  to  negotiate  the  terms  and  conditions  of  a   business
combination  with  Cerner in accordance with guidelines specified  by
the board.

      On  April  5, 2000, Cerner conducted a technical due  diligence
review at the offices of CITATION.

      On  April 7, 2000, CITATION's chairman and president  met  with
Cerner's president, laboratory enterprise managing director and  vice
president  of  finance  at Cerner's offices to negotiate  the  merger
terms and to discuss strategies post-merger.

      On April 13, 2000, Cerner presented CITATION management with  a
revised  offer  to acquire CITATION for consideration  consisting  of
$5.25 per share for ten percent of the outstanding shares of CITATION
common  stock, and 0.164 shares of Cerner common stock per share  for
ninety percent of the outstanding shares of CITATION common stock.

     On April 14, 2000, CITATION's board held another special meeting
for  the  purpose of considering the recent developments with respect
to  the  interest  expressed by Cerner.  Management reported  on  the
discussions   and  its  recommendation  regarding  the  process   for
determining whether a transaction could be negotiated which the board
would  recommend  to  shareholders  for  approval.   Management  also
reported  that  it had engaged A.G. Edwards & Sons, Inc.  to  act  as
financial advisor for the purpose of giving their opinion as  to  the
fairness of the potential transaction.

      On  April  27,  2000, the president of CITATION  and  the  vice
president of finance of Cerner negotiated the final pricing  for  the
transaction,  which consisted of $5.10 per share for ten  percent  of
the outstanding shares of CITATION common stock and 0.1695 shares  of
Cerner  common stock per share for ninety percent of the  outstanding
shares of CITATION common stock.

      On  May 1 and 2, 2000, Cerner representatives conducted  legal,
financial and operational due diligence at CITATION's offices.

      On  May  8,  2000, counsel for Cerner circulated a  preliminary
draft of a merger agreement.  CITATION objected to various aspects of
the  proposed agreement and requested several additional  provisions,
including  provisions  relating to termination  if  CITATION's  board
received  a superior proposal that its counsel and financial  advisor
concluded  was required to be pursued under the directors'  fiduciary
duties.

      The  negotiations continued during the week of May 8, 2000.  In
addition,  the  parties negotiated an arrangement pursuant  to  which
CITATION  could terminate the merger agreement and pursue a  superior
proposal  for a business combination   with    a  party   other  than
Cerner under specified circumstances, upon the payment of a  $600,000
termination  fee.   As  part  of  the negotiated  resolution  and  at
Cerner's request, CITATION's directors and executive officers  agreed
to  enter into a shareholders agreement, pursuant to which CITATION's
directors and executive officers would agree, among other things,  to
vote the shares of CITATION's common stock beneficially owned by them
in  favor  of  the  proposed merger and the transactions contemplated
thereby and to  grant  an  option to Cerner to sell their  shares  to
Cerner  for  a  purchase  price  equal   to   the   proposed   merger
consideration.

      On  May  8,  2000, A.G. Edwards & Sons, Inc. met with  Cerner's
chief  operating officer, chief financial officer and vice  president
of  finance  in  connection  with due  diligence  relating  to  their
fairness opinion.

      On  May  11,  2000, CITATION reviewed Cerner's  publicly  filed
financial statements.

<PAGE>                           -22-

     On May 12, 2000, CITATION's counsel traveled to Cerner's offices
in  Kansas City, Missouri to undertake due diligence of Cerner.   The
due  diligence  review  included  on-site  review  of  documents  and
financial information regarding Cerner.

      On  May  12, 2000, CITATION's board held a special  meeting  to
consider  the  agreement  and  plan of merger  and  the  transactions
contemplated  thereby,  which had been  negotiated  by  the  parties'
representatives.  CITATION's management reviewed the  development  of
the  transaction since the preceding board meeting on April 14, 2000.
A.G.  Edwards representatives presented a financial analysis  of  the
consideration  to  be  received  by CITATION's  shareholders  in  the
merger. A.G. Edwards orally advised CITATION's board that it was A.G.
Edwards' opinion that the merger consideration payable in the  merger
was  fair, from a financial point of view, to CITATION's shareholders
and  that  A.G.  Edwards' written opinion to  that  effect  would  be
included  in  the  proxy  materials  issued  in  connection  with   a
shareholder  meeting held to vote on the merger.  CITATION's  counsel
reviewed  the  terms of the transaction documents,  as  well  as  the
interests  of individual directors in the transaction. Mr. Neece  and
Mr. Copper discussed with the directors the terms of their respective
employment  and  consulting  arrangements.   Thereafter,  the   board
discussed  the  advisability  of  the  proposed  merger,  the  merger
agreement  and  the  transactions  contemplated  thereby.    At   the
conclusion  of the discussion, CITATION's board voted unanimously  to
approve  the  merger,  the  merger  agreement  and  the  transactions
contemplated  thereby  and to recommend that CITATION's  shareholders
vote  for  approval and adoption of the merger, the merger  agreement
and  the  transactions contemplated thereby.  In addition, the  board
amended  CITATION's 1999 Directors Stock Option Plan  to  remove  the
shareholder approval requirement for options granted under the  plan,
and  to  provide  that all options will continue  to  be  exercisable
during  their stated terms, notwithstanding that the optionees  would
cease  being  directors after the merger.  The  shareholder  approval
requirement  had been included pursuant to the rules  of  the  Nasdaq
National Market and was to be solicited at the 2000 annual meeting of
shareholders.  In view of the proposed merger, the Nasdaq requirement
will no longer be applicable.

      On  May 10, 2000, the boards of directors of Cerner and  Cerner
Performance  Logistics,  Inc.,  and  Cerner,  acting  as   the   sole
shareholder of Cerner Performance Logistics, Inc., each approved  the
merger.

      Cerner  representatives then were advised of CITATION's board's
approval and the merger agreement and the shareholders agreement were
executed  by  the parties after the close of trading  on  the  Nasdaq
National  Market on May 15th.  Shortly thereafter Cerner and CITATION
separately announced the proposed merger.

Cerner's Reasons for the Merger

      Cerner's board of directors has unanimously determined that the
merger  is  advisable and in the best interests  of  Cerner  and  its
shareholders  and  has approved and adopted the  merger,  the  merger
agreement and the transactions contemplated thereby.  In reaching the
determination that the merger is advisable and in the best  interests
of  Cerner and its shareholders, the Cerner board considered a number
of  factors, which included (but did not consist exclusively of)  the
following:

                The  acquisition  of  CITATION  is  complementary  to
     Cerner's existing laboratory client base that primarily consists
     of larger hospitals, health systems and independent laboratories
     and  will allow Cerner to broaden its market presence in the lab
     industry,  furthering  Cerner's mission  to  improve  healthcare
     efficiencies, patient safety and appropriate clinical  decision-
     making;

                CITATION  clients will be provided an opportunity  to
     expand  their  automation of clinical processes  throughout  the
     entire  healthcare organization through Cerner's HNA  Millennium
     suite  of  products  and  through Cerner's  application  service
     provider   business.     This   represents   additional   market
     opportunities for Cerner;

               Cerner should be able to reduce operating costs of the
     CITATION  business  by reducing CITATION's cost  structure,  for
     example  eliminating  CITATION's cost  of  being  a  stand-alone
     public  company  (e.g.  costs  of complying  with  the  periodic
     reporting   requirements   of  the   Securities   and   Exchange
     Commission,   auditing  costs  and  duplicative   administrative
     resources);  and

               Cerner's existing knowledge of the laboratory business
     should allow Cerner to absorb CITATION in an efficient manner.

       The  foregoing  discussion  of  the  information  and  factors
discussed  by  the  Cerner board is not meant to  be  exhaustive  but
includes  all material factors considered by the Cerner  board.   The
Cerner board did not find it practical to

<PAGE>                              -23-

quantify, rank or otherwise attach any relative weight to the various
factors.  In addition,  the Cerner  board  did not reach any specific
conclusion with respect to each of  the  factors considered,  or  any
aspect  of  any  particular factor, but conducted an overall analysis
of these factors, including discussions   with  Cerner's   management
and legal and financial advisors. As  a  result  of its consideration
of the foregoing, the Cerner  board  determined that the merger,  the
merger  agreement  and  the  transactions  contemplated  thereby  are
advisable  and  fair  to  and in the best interests of Cerner and its
shareholders  and  approved  and  adopted  the  merger,  the   merger
agreement  and    the  transactions contemplated thereby.

Recommendation of the CITATION Board and Reasons for the Merger

      CITATION's  board of directors has unanimously determined  that
the  merger  is  advisable and fair to and in the best  interests  of
CITATION  and  its  shareholders and has  approved  and  adopted  the
merger,  the  merger  agreement  and  the  transactions  contemplated
thereby.  Accordingly, the CITATION board unanimously recommends that
shareholders  vote  "FOR" approval and adoption of  the  merger,  the
merger agreement and the transactions contemplated thereby.

      In  reaching its determination that the merger is advisable and
fair  to  and in the best interests of CITATION and its shareholders,
the  CITATION  board considered a number of factors,  which  included
(but did not consist exclusively of) the following:

               You will receive for ninety percent of your shares of CITATION
     common stock 0.1695 shares of Cerner common stock for each such share
     and $5.10 cash per share for ten percent of your shares of CITATION
     common stock.  As reported by Nasdaq on May 15, 2000, prior to the
     announcement of the proposed merger, the last sale price for Cerner
     common stock was $25.125.  The merger consideration represents, as of
     that date, a total per share price of approximately $4.54 per share
     for CITATION's stock, a substantial premium over the last sales price
     of $3.00 reported by Nasdaq on that same date;

               The CITATION board's knowledge of CITATION's business,
     operations, properties, assets, financial condition and operating
     results.  Specifically, in order to achieve significant future growth
     in  CITATION's  business  and operations,  CITATION  would  need
     significant amounts of additional capital, which the CITATION board
     believes could be financed on more favorable terms by Cerner than by
     CITATION as an independent business.  In this regard, the CITATION
     board considered the likelihood that continuation of the limited
     public float and the relatively small size of CITATION's business
     would result in greater cost of capital to finance CITATION's growth
     than would be the case as part of a much larger organization;

               CITATION's operating results will continue to be subject to
     risks of conditions or events outside CITATION's control, such as
     rapid  changes  in the healthcare industry, lower  reimbursement
     policies, increasing government regulation, increasing pressure to
     reduce   costs  from  managed  care  operations  and  increasing
     consolidation in CITATION's industry. These uncertainties ultimately
     could have a material adverse effect upon CITATION's results  of
     operations  or  financial condition and could negatively  affect
     CITATION's future stock price;

               The proposed merger will not disrupt CITATION's business;

               The attractiveness of a transaction involving primarily  stock
     offer consideration from Cerner relative to perceived opportunities and
     the feasibility of other possible strategic alternatives to enhance long-
     term shareholder value, including risks and uncertainties attendant
     to possible future acquisitions;

               That you will receive primarily Cerner stock pursuant to the
     merger agreement and the opportunity to participate in any growth in
     the business of the combined company;

               The payment of the cash portion of the merger consideration will
     be  funded by Cerner out of funds on hand or financing which  is
     readily available to it and, accordingly, the transaction is not
     subject to a financing contingency;

               The lack of competitive responses to inquiries made by or on
     behalf of CITATION to other healthcare information systems providers
     as  to  whether such parties would be interested in  a  business
     combination;

<PAGE>                             -24-

               The oral opinion of A.G. Edwards to the effect that, based upon
     and  subject  to  certain  assumptions, matters  considered  and
     limitations, the consideration to be received by you pursuant to the
     merger agreement is fair, from a financial point of view, to you; and

               The CITATION board's view that the terms of the merger agreement
     as  reviewed by the CITATION board with its legal and  financial
     advisors, are advisable and fair to and in the best interests of you
     and CITATION with the flexibility, under certain circumstances, to
     accept a proposal from a third party for a business combination with
     CITATION which the CITATION board determines to be superior to the
     merger agreement.

      The  CITATION  board  also considered  the  following  negative
factors concerning the merger:

               The fact that you will receive primarily Cerner stock
     pursuant to the merger agreement will subject your investment to
     the risk of any decline in the business in the combined company;
     and

               The  risk  that the merger would not be completed  in
     accordance  with  its  terms or at all, and  the  disruption  of
     CITATION's business if the merger is abandoned.

      The board also recognized that members of CITATION's board  and
executive  officers have interests in the merger that  are  different
from  CITATION's  other shareholders.  See "-  Interests  of  Certain
Persons in the Merger."

       The  foregoing  discussion  of  the  information  and  factors
discussed  by  the CITATION board is not meant to be  exhaustive  but
includes  all material factors considered by the board.  In  view  of
the   complexity  and  wide  variety  of  information   and   factors
considered,  both positive and negative, the CITATION board  did  not
find  it practical to quantify, rank or otherwise attach any relative
weight  to the various factors.  In addition, the CITATION board  did
not reach any specific conclusion with respect to each of the factors
considered, or any aspect of any particular factor, but conducted  an
overall  analysis  of  these factors, including thorough  discussions
with  CITATION's management and legal and financial advisors.   As  a
result  of  its  consideration of the foregoing, the  CITATION  board
determined that the merger, the merger agreement and the transactions
contemplated  thereby  are advisable and fair  to  and  in  the  best
interests  of CITATION and its shareholders and approved and  adopted
the  merger,  the merger agreement and the transactions  contemplated
thereby.

Opinion of CITATION's Financial Advisor

     A.G.  Edwards has provided to the CITATION board of directors  a
fairness  opinion in connection with the proposed transaction  to  be
effected pursuant to the merger agreement.  A.G. Edwards was selected
by  the  CITATION board to provide a fairness opinion based  on  A.G.
Edwards' qualifications, expertise and reputation.  At the meeting of
the  CITATION board on May 12, 2000, A.G. Edwards delivered its  oral
opinion.  On May 15, 2000, A.G. Edwards delivered its written opinion
to  the  board  (such written opinion dated May 15, 2000,  the  "A.G.
Edwards  opinion") that, as of that date, based upon and  subject  to
the   various   considerations  set  forth  in   the   opinion,   the
consideration  to  be  received in aggregate by the  shareholders  of
CITATION  pursuant  to  the  merger  agreement   was  fair,  from   a
financial   point   of   view,   to the CITATION shareholders.

     The  full  text of the A.G. Edwards opinion, which  sets  forth,
among  other  things, assumptions made, procedures followed,  matters
considered  and limitations of the scope of the review undertaken  by
A.G. Edwards in rendering such opinion, is attached as Appendix B  to
this  proxy  statement/prospectus  and  is  incorporated  herein   by
reference.  The  A.G. Edwards opinion was directed  to  the  CITATION
board  and  addresses only the fairness of the consideration  from  a
financial  point of view as of the date of the A.G. Edwards  opinion,
and  does  not  constitute a recommendation  to  any  shareholder  of
CITATION as to how to vote.  The summary of the A.G. Edwards  opinion
set  forth  in  this proxy statement/prospectus is qualified  in  its
entirety by reference to the full text of such opinion.

     In  arriving  at  the A.G. Edwards opinion, A.G. Edwards,  among
other things:

          reviewed the Agreement and Plan of Merger dated as of May 15,
          2000 and related documents;

          reviewed certain historical financial statements and financial
          projections for CITATION and Cerner;

          discussed  with  CITATION's management the  nature  of  the
          negotiations of the terms of the transaction;

<PAGE>                           -25-

          compared the relative value of the consideration to be received
          by CITATION's shareholders to the historical public market value
          relationship between CITATION and Cerner stock;

          held  discussions  with management of CITATION  and  Cerner
          regarding the past and current business operations, financial
          condition and future prospects of CITATION and Cerner, including
          information relating to the strategic, financial and operational
          benefits anticipated from the transaction;

          reviewed the industries in which CITATION and Cerner operate;

          reviewed CITATION's and Cerner's relative contributions to the
          historical and projected combined revenue, EBITDA, EBIT, net income
          and book value;

          reviewed  the  pro  forma financial  impact  to  CITATION's
          shareholders of the transaction giving effect to certain operating
          cost-savings as estimated by the management of CITATION and Cerner;

          compared certain financial information for CITATION and Cerner,
          including the valuation in the transaction, with similar information
          and stock market information for certain other companies, the
          securities of which are publicly traded;

          compared certain financial information for CITATION, including
          the valuation in the transaction, with similar information for
          certain recent selected business combinations in the healthcare
          information technology ("IT") sector;

          compared  the premium above current market value  that  the
          consideration represents to that of other premiums received in other
          selected transactions which A.G. Edwards deemed similar; and

          completed such other studies and analyses that were considered
          appropriate.

     A.G.  Edwards did not assume any responsibility for  independent
verification of any of the foregoing information and relied upon  its
being  complete and accurate in all material respects.  A.G.  Edwards
assumed that the financial projections and estimates of the financial
strategic  and  operational benefits anticipated  from  the  proposed
transactions  were  reasonably prepared on the basis  reflecting  the
best  then  currently available estimates and judgments of CITATION's
and   Cerner's  managements  as  to  the  expected  future  financial
performance  of CITATION and Cerner, in each case, on  a  stand-alone
basis  and  after  giving effect to the proposed transactions.   A.G.
Edwards   has   not  independently  verified  such   information   or
assumptions  nor  does it express any opinion with  respect  thereto.
A.G.  Edwards  did  not  perform an audit  or  make  any  independent
valuation  or  appraisal of the assets or liabilities, contingent  or
otherwise, of CITATION or Cerner, nor was A.G. Edwards furnished with
any  such appraisals.  In addition, CITATION and Cerner informed A.G.
Edwards, and A.G. Edwards assumed,  that  the  proposed   transaction
will  be  accounted  for  as  a  purchase  business  combination   in
accordance with GAAP  and will be consummated in accordance with  the
terms  set forth in  the  merger agreement without any waiver of  any
material  terms or conditions.

     In  arriving at its opinion, A.G. Edwards was not authorized  to
solicit,  and  did  not solicit interest from any  third  party  with
respect   to   an   acquisition,  business   combination   or   other
extraordinary transaction involving CITATION.  A.G. Edwards  did  not
participate directly in the negotiations or discussions with Cerner.

     The  following  is a summary of the material financial  analyses
performed  by  A.G. Edwards in arriving at the A.G. Edwards  opinion,
which  were  discussed with the CITATION board of  directors  at  its
meeting on May 12, 2000.

     Implied Relative Value Analysis

     A.G. Edwards reviewed the historical stock price performance  of
CITATION relative to the historical stock price performance of Cerner
and  compared these to the relative values implied by the transaction
at  a range of Cerner stock prices.  Based on stock prices as of  May
8, 2000 (CITATION - $2.88 and Cerner - $21.88), A.G. Edwards observed
that  the  relative value ratio implied by the transaction was  5.7x.
This compared favorably to the actual 7.6x relationship of the stocks
as of the same date and variety of averages over a range of   periods
dating back to January 1, 1 997.   The range of selected hypothetical
Cerner  share  prices  and  the  relative  value ratio implied by the
transaction were as follows:

<PAGE>                          -26-

<TABLE>

          Hypothetical                           Implied Value Ratio
       Cerner Share Price                        (CITATION to Cerner)
       ------------------                        --------------------

             <S>                                      <C>
             $24.88                                   5.1x
             $21.88                                   5.7x
             $17.88                                   6.5x

</TABLE>

<TABLE>

                         Historical Value Relationship
                         -----------------------------

                <S>                                    <C>
                Average since January 1997             6.5x
                Average since July 1998                9.3x
                Average since January 1999             8.9x

</TABLE>

     Relative Contribution Analysis

     A.G.  Edwards reviewed the relative ownership of the holders  of
CITATION  stock  on  a  pro  forma  basis  and  found  that  CITATION
shareholders  would own approximately two percent of the  outstanding
shares of Cerner following the transaction.       At the end of 1998,
Cerner  licensed  certain  technology  to  CareInsite,  an e-commerce
healthcare  company,  in  exchange  for  an  approximately 19% equity
stake. See "Risk Factors - Market risk may affect Cerner's investment
holdings and results of operations." On February 13, 2000, CareInsite
agreed to a merger with Healtheon/WebMD that calls for each  share of
CareInsite to be exchanged for 1.3 shares of Healtheon/Web MD.     In
order  to  analyze  the impact of Cerner's interest in CareInsite and
its pending merger with   Healtheon/WebMD on the pro forma ownership,
A.G. Edwards assumed that Cerner sold the CareInsite stake  at market
value and applied  the  after-tax  proceeds  to a share repurchase at
Cerner's  stock  price as of May 8, 2000.   Under  this scenario, the
CITATION  shareholders could  own  approximately four percent of  the
outstanding shares of Cerner.

     A.G.   Edwards  compared  the  above  projected  and  pro  forma
ownership   percentage   of  CITATION  shareholders   to   CITATION's
contribution  to the combined company's performance on  a  historical
and  projected  basis for several different financial  measures.  The
following  table  sets forth the material results  of  this  analysis
expressed  as CITATION's percentage of the combined company expressed
on a calendar year basis.

<TABLE>
                                                    Net        Book
                   Net Sales    EBITDA     EBIT    Income      Value
                   ---------    ------     ----    ------      -----

         <S>          <C>        <C>     <C>      <C>           <C>
         1999         4.8%       4.8%      4.2%     4.6%
         LTM          4.2%       4.3%      2.6%     3.1%        1.2%
         2000P        3.7%       1.9%     (0.1%)   (0.2%)
         2001P        4.0%       2.3%      1.4%     1.3%

</TABLE>

     A.G.  Edwards  noted that the pro forma ownership stake  of  the
CITATION shareholders was inline with its projected contribution for
2000P  and 2001P EBITDA and EBIT and net income for 2001P.   The  pro
forma  ownership  stake  for CITATION shareholders  was  above  these
measures  as well as the company's contribution in terms of the  last
12 months ("LTM") book value and 2000P EBIT and net income.

     Analysis of Selected Precedent Transactions

     A.G.  Edwards  compared publicly available financial  statistics
regarding eleven completed transactions since June 1997 involving the
acquisition  of small non-Internet Hospital-focused IT  companies  to
the  implied value of the transaction at Cerner share prices  ranging
from  $14.88 to $27.88.  In addition, A.G. Edwards analyzed a broader
universe  of  forty-six  healthcare IT transactions  announced  since
August   1996.   Transaction  multiples  used  included  the  implied
aggregate  transaction value (the value paid for the relevant  target
company's  equity on a fully diluted basis plus total debt less  cash
and  cash equivalents) as a multiple of LTM sales, LTM EBITDA and LTM
EBIT  and the implied equity value as a multiple of LTM earnings  and
book value.  The results of this comparison were as follows:

<PAGE>                           -27-

<TABLE>

                                                         Comparable Precedent Transactions

                     Implied Multiples      Selected Small    Total Healthcare
                  At Cerner Share Prices     Non-Internet        IT-Since        Total Healthcare IT-
                 $17.88   $21.88   $24.88   Hospital Focused   December 1998       Since August 1996
                 ------   ------   ------   ----------------   -------------       -----------------
 <S>              <C>      <C>      <C>           <C>              <C>                   <C>
 Transactions                                      11               15                    46
 LTM Sales          .9x     1.1x     1.2x          1.2x            2.1x                  2.7x
                                               (.3x-4.1x)      (0.3x-7.1x)           (.3x-83.0x)
 LTM EBITDA        6.8x     8.0x     8.9x         15.7x           17.2x                 19.1x
                                              (3.0x-44.9x)    (10.8x-33.1x)         (3.0x-441.8x)
 LTM EBIT         34.1x    40.2x    44.8x         27.7x           32.7x                 28.6x
                                              (3.5x-30.3x)    (11.3x-53.2x)          (3.5x-53.2x)
 LTM Net Income   63.1x    75.0x    84.0x         25.4x           62.7x                 42.3x
                                              (9.7x-37.3x)    (37.3x-64.8x)          (3.8x-74.5x)
 Book Value        1.6x     1.9x     2.1x         17.8x            9.8x                  9.7x
                                              (1.5x-40.5x)     (1.5x-38.6x)          (1.5x-40.5x)

</TABLE>

     A.G.  Edwards  noted  the  LTM sales multiples  implied  by  the
transaction  value  as of May 8, 2000 were in  line  with  the  sales
multiples for the similar precedent transactions classified as  Small
Non-Internet  Hospital  Focused  transactions.  The  other  financial
measures implied by the transaction were either in the range or above
the  median for this selected group also.  In addition, A.G.  Edwards
noted  that  the sales and EBITDA multiples for transactions  in  the
larger  group  of  all  Healthcare IT companies have  declined  since
December  1998  relative to multiples received over the  full  period
since August 1996.

     Discounted Cash Flow Analysis

     A.G.  Edwards  performed an analysis of  the  present  value  of
CITATION's  future tax-adjusted operating cash flows as projected  by
management, on a stand-alone basis, using discount rates ranging from
15.0%  to  25.0% and terminal sales multiples ranging from  0.75x  to
1.5x. Based on this analysis, A.G. Edwards calculated a range of  per
share  prices  for CITATION between $2.90 and $5.71 compared  to  the
implied share price of $3.85 derived from the transaction value as of
May 8, 2000.


     Pro Forma Financial Analysis

     A.G   Edwards   reviewed  the  projected  2000  and   2001   EPS
accretion/dilution to the CITATION shareholders as a  result  of  the
transaction.  The results were adjusted to reflect the same per share
basis  for comparison purposes. The results of this analysis were  as
follows:

<TABLE>

                     CITATION                    CITATION
              Projected - Stand-Alone     Projected - Pro forma*     % of Accretion
              -----------------------     ---------------------      --------------

<S>                   <C>                         <C>                     <C>
2000 EPS              ($0.01)                     $0.09                   NMF

2001 EPS               $0.12                      $0.17                   36.1%

</TABLE>

     *  Based  on  management projections and assumes  no  synergies.
Goodwill amortization over 5 years.

     Premiums Paid Analysis

     A.G.  Edwards  reviewed  a range of hypothetical  premiums  paid
above   public  market  in  the  transaction  to  several  types   of
transaction   premiums  over  the  past  three  years  according   to
Mergerstat,   a   nationally  recognized  source   of   mergers   and
acquisitions  information.  Based on a range of Cerner  stock  prices
from $17.88 to $24.88, the implied premiums range from 12.6% to 49.7%
over  the  $2.88 market price for CITATION stock as of May  8,  2000.
This range of premiums is in line with the average of 30.7% for 1,722
deals  between  1997  and  1999 where the  premiums  and  price  were
disclosed, the average of 37.4% for 193 deals between 1997  and  1999
where  the  purchase price was below $25,000,000 and the  average  of
36.7%  for 621 deals between 1997 and 1999 where the stock price  was
below  $10.00 per share five days prior to

<PAGE>                         -28-

announcement.  The  range, however, was  slightly  below  the average
premium of  49.9% for  184  deals  between  1997 and  1999  involving
Computer, Software, Supplies and Service companies.

     Public Company Trading Analysis

     A.G.  Edwards compared certain financial information of CITATION
and  Cerner with that of the following CITATION comparable  companies
and  Cerner  comparable companies, respectively. Based  on  lines  of
business and financial profile, the comparable companies were  deemed
to be reasonably similar to CITATION and Cerner by A.G. Edwards.  The
comparable   companies  consist  of  two  groups  of  healthcare   IT
companies:

     The  CITATION  comparable companies consisted of  the  following
small to medium sized healthcare IT companies:

               Apache Medical Systems
               Creative Computer Applications, Inc.
               Dynamic Healthcare Technologies, Inc.
               Health Management Systems
               InfoCure Corporation
               Mediware Information Systems
               Quadramed Corporation
               Quality Systems
               SpaceLab Medical, Inc.
               Sunquest Info Systems

     The  Cerner  comparable  companies consisted  of  the  following
medium to large healthcare IT companies:

               IDX Systems Corporation
               InfoCure Corporation
               National Data Corporation
               QuadramedCorporation
               SpaceLab Medical, Inc.
               Sunquest Info Systems

     In addition to the primary comparable companies listed above for
Cerner,  A.G.  Edwards also reviewed the multiples and public  market
performance  for  Eclipsys Corporation, IMS Health, Inc.  and  Shared
Medical  Systems Corporation, which were pending acquisition  targets
as of the date of the A.G. Edwards opinion. On May 25, 2000, Eclipsys
Corporation  terminated  its planned merger with Neoforma and entered
into  a strategic marketing and distribution agreement with Neoforma.
On  May  17,  2000,  IMS  Health restructured its pending merger with
TriZetto  such  that  the  two  companies  will    remain   separate,
independently  traded  companies  and  TriZetto  will  purchase   IMS
Health's Erisco Managed Care Technologies for 10.6 million shares  of
TriZetto stock.

     The  financial  information reviewed by A.G.  Edwards  included,
among  other things, each company's stock price as a multiple of  the
LTM  and First Call Corporation or I/B/E/S estimates for LTM, current
fiscal  and  next  fiscal  year EPS and each company's  total  market
capitalization  (market value of common equity plus total  debt  less
cash  and  cash equivalents) as a multiple of LTM sales,  EBITDA  and
EBIT.   A.G.  Edwards  reviewed the multiples for  CITATION  for  the
fiscal year ended March 31, 2000 and the projected fiscal year  ended
March  31, 2001 based on the public market price for CITATION  as  of
May  8,  2000 and at various transaction valuations implied by Cerner
stock  prices  ranging from $14.88 to $27.88.  A.G. Edwards  reviewed
the multiples for Cerner at the public market price for Cerner as  of
May 8, 2000 using both the consensus earnings estimates published  by
securities  analysts  and  Cerner's  internal  budgeted  numbers  for
earnings  and  the LTM results for all other financial measures.   In
addition  to using Cerner's actual public market value for multiples,
A.G.  Edwards  adjusted the actual public market  value  of  Cerner's
stake in CareInsite by deducting the after-tax value of the stake and
applying  a  range  of  liquidity discounts  from  0%  to  30%.   The
following  table  sets  forth the most substantive  results  of  this
analysis.

<PAGE>                        -29-

<TABLE>

       Implied Multiples     Public Market as
      at Cerner Share Price   of May 8, 2000                Median
      ---------------------   --------------                ------

                                                Small       Med. to
                                                to Med.     Large
                                                Health            Acq.
              $17.88  $21.88   $24.88  CITATION  Cerner(a)  Healthcare(b)  Healthcare(c)   Targets(d)
              ------  ------   ------  --------  ---------  -------------  -------------   ----------
<S>          <C>      <C>      <C>      <C>       <C>           <C>            <C>           <C>
LTM Sales       .9x     1.1x     1.2x      .8x     1.2x         0.8x           1.1x           1.7x
                                                             (.3x-1.5x)     (.6x-1.4x)
LTM EBITDA     6.8x     8.0x     8.9x     6.1x     8.8x         6.5x           5.8x          11.0x
                                                            (2.7x-10.5x)    (3.3x-8.8x)
LTM EBIT      34.1x    40.2x    44.8x    30.4x    28.3x         9.7x           8.5x          14.7x
                                                            (4.2x-16.2x)    (4.4x-16.2x)
LTM Net                                                        15.6x          13.4x          23.5x
 Income       63.1x    75.0x    84.0x    54.9x    68.7x     (8.1x-28.7x)    (8.1x-28.7x)
Next Fiscal
 Year Net                                                      11.5x          13.5x
 Income      144.9x   172.2x   192.6x   143.8x    20.5x     (8.7x-29.8x)    (9.0x-29.8x)     17.5x

</TABLE>

     (a)  Excludes the after-tax market value of Cerner's interest
          in  CareInsite  as  of  May 8, 2000  without  a  discount  for
          liquidity.   Cerner's  interest  in  CareInsite  includes  all
          performance shares and warrants.
     (b)  Small  to  Medium Healthcare IT consists of  AMSI,  CAP,
          DHTI, HMSY, INCX, MEDW, QMDC, QSII, SLMD and SUNQ.
     (c)  Medium  to  Large Healthcare IT consists of IDXC,  INCX,
          NDC, QMDC, SLMD and SUNQ.
     (d)  Acquisition Targets consists of ECLP, RX and SMS.

     A.G. Edwards observed that the CITATION multiples implied by the
transaction  value as of the date of the opinion (May 8,  2000)  were
above  the  median  multiples for the comparable group  of  Small  to
Medium  Healthcare IT companies.  At the low end of the  hypothetical
Cerner price range ($14.88), the transaction multiples for LTM sales,
LTM  EBIT,  LTM Net Income and Next Fiscal Year Net Income were  also
equal  to  or  above the multiples for the comparable companies.   In
addition,  A.G.  Edwards noted that Cerner's multiple  of  LTM  sales
(excluding the CareInsite stake), which A.G. Edwards determined to be
a  significant  measure,  was  consistent  with  the  median  of  the
comparable companies in the Medium to Large Healthcare IT  group,  as
would be expected, and below the median for the acquisition targets.

     Other Considerations

     In  addition  to  a review of the quantitative  aspects  of  the
transaction  and  the financial performance of CITATION  and  Cerner,
A.G.  Edwards noted several qualitative aspects about the transaction
and  the  relative  positions of the companies.  In particular,  A.G.
Edwards  noted  that CITATION had been unsuccessful in  attracting  a
successful  buyer  through a prior sales process  and  the  company's
stock  price  had  been negatively impacted by  a  lack  of  research
coverage,  a small market capitalization and a limited public  float.
Conversely,   A.G  Edwards  recognized  that  Cerner   maintained   a
considerably larger market capitalization and was widely followed  by
research analysts.  Cerner's growth prospects appear to be strong due
to  positive  initial  market  acceptance  for  its  HNA  Millenniumr
product.   In  addition,  Cerner's stock price  has  been  positively
impacted  by its investment in CareInsite and the fact that  it  will
become  a  major  shareholder in Healtheon/WebMD as  a  result  of  a
pending merger between that company and CareInsite.

     The  foregoing  summary  does  not  purport  to  be  a  complete
description of all the analyses performed by A.G. Edwards in arriving
at  its  opinion.  The preparation of a fairness opinion is a complex
process  and  is  not  susceptible to  partial  analysis  or  summary
description.   In  rendering the A.G. Edwards opinion,  A.G.  Edwards
applied   its   judgment  to  a  variety  of  complex  analyses   and
assumptions, considered the results of all of its analyses as a whole
and did not attribute any particular weight to any analysis or factor
considered  by  it.   Furthermore,  selecting  any  portion  of   its
analyses,   without  considering  all  analyses,  would   create   an
incomplete  view of the process underlying the A.G. Edwards  opinion.
In  performing  its analyses, A.G. Edwards made numerous  assumptions
with  respect to industry performance, general business and  economic
conditions and other matters, many of which are beyond the control of
CITATION  or Cerner.  The assumptions made and judgments  applied  by
A.G. Edwards in rendering its opinion are not readily susceptible  to
description  beyond  that  set forth  in  the  written  text  of  the
A.G.  Edwards  opinion itself.  No company, transaction  or  business
used  in  such analyses as a comparison is identical to  CITATION  or
Cerner  or  the  proposed transactions, nor is an

<PAGE>                          -30-

evaluation  of  the results  of  such analyses entirely mathematical;
rather, such analyses involve  complex  considerations and  judgments
concerning financial and operating  characteristics and other factors
that  could  affect  the acquisition, public trading or other  values
of  the companies, business segments or transactions being  analyzed.
Any estimates contained herein  are  not  necessarily  indicative  of
future results  or actual values, which may be significantly more  or
less favorable than those  suggested by such estimates.  A.G. Edwards
does  not  assume responsibility if future results are different from
those  projected. The analyses performed were prepared solely as part
of  A.G.  Edwards'  analysis  of  the   fairness   of    the   merger
consideration,  from  a financial  point of view, to  the  holders of
CITATION shares and were conducted in connection with the delivery of
A.G. Edwards' opinion.The analyses do not purport to be appraisals or
to reflect the prices at  which  CITATION or Cerner might actually be
sold.

     A.G.  Edwards,  as part of its investment banking  business,  is
regularly engaged in the valuation of businesses and their securities
in    connection   with   mergers   and   acquisitions,    negotiated
underwritings,  competitive  biddings,  secondary  distributions   of
listed and unlisted securities, private placements and valuations for
estate,  corporate and other purposes.  A.G. Edwards is not aware  of
any  present  or  contemplated  relationship  between  A.G.  Edwards,
CITATION,  CITATION's directors and officers or its shareholders,  or
Cerner, Cerner's directors and officers or its shareholders, which in
its opinion would affect its ability to render a fair and independent
opinion in this matter.

     For  its  services in connection with the proposed transactions,
A.G.  Edwards will receive from CITATION a fee of $150,000  of  which
$75,000  was payable upon the delivery of A.G. Edwards' opinion  with
the  remaining  $75,000  payable upon  the  closing  of  the  merger.
CITATION  has  agreed to reimburse A.G. Edwards  for  its  reasonable
out-of-pocket  expenses  and  to  indemnify  A.G.  Edwards  and   its
affiliates,   their  respective  directors,  officers,   agents   and
employees and each person, if any, controlling A.G. Edwards or any of
its  affiliates  against certain liabilities and expenses,  including
certain  liabilities under the federal securities  laws,  related  to
A.G. Edwards' engagement.

Federal  Securities Laws Consequences and Restrictions on Resales  by
Affiliates

     Shares   of  Cerner  common  stock  to  be  issued  to  CITATION
shareholders in the merger have been registered under the  Securities
Act  of  1933,  as  amended,  and may be traded  freely  and  without
restriction  by  those shareholders not deemed to be  affiliates  (as
that  term  is  defined under the Securities Act) of  CITATION.   Any
subsequent  transfer  of shares, however, by any  person  who  is  an
affiliate of CITATION at the time the merger is submitted for a  vote
of  the  CITATION  shareholders will,  under  existing  law,  require
either:

          the  further  registration under the Securities Act  of  the
          Cerner common stock to be transferred,

          compliance  with  Rule 145 promulgated under the  Securities
          Act,    which   permits   limited   sales   under   certain
          circumstances, or

          the availability of another exemption from registration.

     An  "affiliate"  of  CITATION  is  a  person  who  directly,  or
indirectly   through  one  or  more  intermediaries,   controls,   is
controlled  by,  or  is under common control with,  CITATION.   These
restrictions  are  expected to apply to the directors  and  executive
officers  of CITATION and the holders of ten percent or more  of  the
outstanding  CITATION common stock.  The same restrictions  apply  to
the  spouses  and certain relatives of those persons and any  trusts,
estates, corporations or other entities in which those persons have a
ten  percent  or greater beneficial or equity interest.  Cerner  will
give stop transfer instructions to the transfer agent with respect to
the  shares of Cerner common stock to be received by persons  subject
to  these restrictions, and the certificates for their shares will be
appropriately legended.

     CITATION  has  agreed  in  the  merger  agreement  to  use   its
reasonable  best efforts to cause each person who is an affiliate  of
CITATION,  for  purposes  of Rule 145 under the  Securities  Act,  to
deliver  to  Cerner a written agreement intended to ensure compliance
with the Securities Act.

Shareholders Agreement

     Contemporaneously  with the execution of the  merger  agreement,
six  executive  officers  and directors of CITATION  entered  into  a
shareholders  agreement  with  Cerner.  The  shareholders   agreement
requires  such  shareholders to vote all shares of CITATION  held  by
them  in  favor  of  the  approval of the merger  agreement  and  the
transactions  contemplated thereby.  In addition,  such  shareholders
granted  to  Cerner  an  irrevocable proxy to vote  their  shares  to
approve  the  merger  agreement  and  the  transactions  contemplated
thereby  and an option to purchase, under certain circumstances,  all

<PAGE                           -31-

or  a  portion  of  their CITATION shares.   There  are  a  total  of
1,133,290  shares  of CITATION common stock held  by  such  executive
officers   and   directors  that  are  subject  to  the  shareholders
agreement, which  constitutes approximately 29.3% of the  outstanding
shares  of CITATION common stock.

Fees and Expenses of the Merger

     Each  party  is  responsible for its own expenses in  connection
with the merger.

Accounting Treatment

     The  merger will be accounted for as a "purchase," as such  term
is  used under GAAP, for accounting and financial reporting purposes.
CITATION  will  be  treated  as  the acquired  corporation  for  such
purposes.   CITATION's assets, liabilities and other  items  will  be
adjusted  to  their estimated fair value on the closing date  of  the
merger  and  will  be  recorded  in Cerner's  consolidated  financial
statements.  The difference between the estimated fair value  of  the
assets, liabilities and other items (adjusted as discussed above) and
the  purchase price, if any, will be recorded as an intangible  asset
and  amortized  against the consolidated earnings of  Cerner  over  a
period  following  completion of the merger.   Cerner's  consolidated
financial  statements will include the operations  of  the  surviving
company,  Cerner  Citation, Inc., after the  effective  time  of  the
merger.

Federal Income Tax Consequences

           The  following  is a discussion of  the  material   federal
income  tax   consequences  of  the  merger to the holders of CITATION
common stock.  The discussion is based  on the Internal  Revenue  Code
(the "Code"), Treasury  regulations, rulings of  the  Internal Revenue
Service (the  "IRS")  and court   decisions   as   of   the   date  of
this   proxy statement/prospectus. Those   authorities   may   change,
possibly retroactively, which   could   alter   the   tax consequences
described below.

           This  discussion assumes that the CITATION common stock  is
held  as  a  capital asset.   In  addition,  this  discussion does not
address all of the tax consequences that may   be  relevant to you  in
light  of  your  particular  circumstances or to CITATION shareholders
subject  to  special  rules,  such   as   foreign  persons,  financial
institutions, tax-exempt  organizations,  dealers  in  securities   or
foreign currencies,  insurance  companies  or  mutual   funds.      In
addition,   this  discussion  does  not  discuss  the  consequences to
shareholders   who   are   subject  to  the  alternative  minimum  tax
provisions,  acquired their shares in stock  option  or stock purchase
plans or in other compensatory transactions, hold their shares as part
of a hedging, straddle, conversion or other risk reduction transaction
or hold the CITATION common stock as "qualified small business stock."

           It is a condition to the obligation of Cerner and  CITATION
to complete the merger that the parties receive the opinions of  their
respective counsel,  dated  as  of  the completion of the merger, that
the merger will be treated as   a reorganization within the meaning of
section 368(a) of the Code.  The opinions will be based upon the facts
existing at the completion of the merger. In rendering their opinions,
the  counsel  will  require  and rely  upon  representations contained
in  certificates of officers of CITATION,  Cerner and others.  The tax
opinions will not bind the IRS nor stop the IRS from taking a contrary
position.

            Based on the merger being  treated   as   a reorganization
for federal income tax purposes, the merger will have  the   following
U.S.   federal   income   tax consequences:

      an  exchanging  CITATION  shareholder  will  recognize
income or gain on the exchange of his or her CITATION  stock
in  the  merger  in an amount equal to the  lesser  of   the
amount  of  cash  received  or the  gain  realized  on  such
exchange.  Any gain realized on any exchange will equal  the
excess  of the fair market value of the Cerner common  stock
and cash received in the exchange over the tax basis of such
exchanged CITATION common stock.  Any gain recognized on the
exchange by the exchanging CITATION shareholder likely  will
be  treated  as capital gain.  However, any gain  recognized
will  be  treated  as  ordinary dividend  income  if,  under
principles   similar  to  the  federal  income   tax   stock
redemption   provisions,  the  exchange  by   the   CITATION
shareholder would not qualify as a "sale or exchange."   The
dividend   characterization  is  not   likely   unless   the
exchanging  CITATION shareholder actually or  constructively
owns an interest in Cerner. Any capital gain recognized will
be  long-term  capital  gain  if  the  exchanging   CITATION
shareholder held the exchanged stock for more than 12 months.
An exchanging CITATION shareholder may not recognize any loss
in the merger.

<PAGE>                          -32-

      the aggregate tax basis of the shares of Cerner common
stock  received  by  CITATION shareholders  will  equal  the
aggregate  tax basis of the shares of CITATION common  stock
surrendered  in exchange for such Cerner common  stock  (not
including  any  basis  attributable to  fractional  shares),
reduced  by the amount of any cash received in the  exchange
and  increased  by  any  income or gain  recognized  on  the
exchange.

      the  holding period of a share of Cerner common  stock
received  in  the  merger will include the holder's  holding
period  in  the  CITATION common stock  surrendered  in  the
exchange for the Cerner common stock;

      a CITATION shareholder receiving cash for a fractional
share will recognize gain or loss in an amount equal to  the
difference  between  the cash received  for  the  fractional
share  and  the  basis  allocable to  such  portion  of  the
CITATION  common stock attributable to the fractional  share
and such gain or loss likely will be capital gain or loss.

       a  dissenting  CITATION  shareholder  generally  will
recognize  capital gain or loss measured by  the  difference
between  the  amount of cash received and the tax  basis  of
such shares of CITATION common stock.  Such capital gain  or
loss  will  be  long-term  capital  gain  or  loss  if   the
dissenting CITATION shareholder held the shares of  CITATION
for more than 12 months.  However, the cash received may  be
treated  as  ordinary  dividend  income  if  the  dissenting
shareholder's  cash  receipt is not treated  as  a  sale  or
exchange  under  the  federal income  tax  stock  redemption
rules.  The  dividend characterization is not likely  unless
the CITATION shareholder actually and constructively owns  a
significant interest in Cerner.

      neither Cerner nor CITATION will recognize any gain or
loss as a result of the merger.

           If  the IRS successfully challenges the merger's status  as
a  reorganization, CITATION's  shareholders   will have  to  recognize
taxable gain or loss on  the  difference between  the (1) sum  of  the
fair market value of the Cerner  common stock  and  the  cash received
in  exchange  for  the CITATION  common stock and (2) the tax basis of
the CITATION common stock exchanged.  This gain or loss generally will
be treated as capital gain or loss.  In  that  event,  a shareholder's
basis in the Cerner common stock  received would equal its fair market
value, and the shareholder would begin a new holding period.

           CITATION   shareholders,   other   than   certain   exempt
recipients, may be subject to backup  withholding  at  a  rate of 31%
with  respect  to  cash  received pursuant to the merger, unless  the
CITATION   shareholder  either   (1)  furnishes  a   correct taxpayer
identification number and certifies that he or  she  is  not  subject
to backup withholding by completing the substitute Form W-9 that will
be included  as  part  of the transmittal  letter  or  (2)  otherwise
proves   that   the shareholder is exempt from backup withholding

           CITATION   shareholders   will   also   be required to file
certain   information  with  their  federal  income  tax  returns  and
to retain certain records with regard  to  the merger.

           Tax matters are very complicated, and the  tax consequences
of the merger to each CITATION shareholder will depend   on  the facts
of   each   shareholder's   situation.   CITATION   shareholders   are
encouraged to consult  their  own tax  advisors regarding the specific
tax consequences of   the  merger,  including  the  applicability  and
effect  of  any federal, state, local and foreign income and other tax
laws.


Interests of Certain Persons in the Merger

      When you consider CITATION's board of directors' recommendation
to  vote  for  the merger, the merger agreement and the  transactions
contemplated thereby, you should be aware of interests which some  of
the  CITATION's directors and executive officers have in  the  merger
that  are  different  from your interests as  CITATION  shareholders.
CITATION's  board  was  aware  of  these  and  other  interests   and
specifically  considered  them  before  approving  and  adopting  the
merger,  the  merger  agreement  and  the  transactions  contemplated
thereby.

      Treatment  of  Stock Options.  Under the terms  of  the  merger
agreement,  each holder of outstanding options, whether or  not  such
options  are exercisable, will be converted into the right to receive
that   number  of  shares  of  Cerner  common  stock  determined   by
multiplying the number of shares of CITATION common stock subject  to
such option or right by the exchange ratio of 0.1695. A corresponding
adjustment in  the exercise  price would also be effected. CITATION's
directors  and executive officers will receive this  option treatment
for all of their options.  In addition, unvested  options  to acquire
up  to  60,000  shares of CITATION common stock outstanding under the
CITATION 1999 Director Stock Option

<PAGE>                           -33-

Plan, as amended,  will, pursuant to their terms, become  exercisable
upon completion  of the merger.  All other outstanding stock  options
shall continue  to vest in  accordance with their terms.

      The  following table sets forth information as to  the  options
outstanding as of the date of this proxy statement/prospectus.

<TABLE>
                                                Number of Options that
                                                 Vest Upon Completion
 Name               Number of Options Held           of the Merger
 ----               ----------------------           -------------

<S>                           <C>                     <C>
J. Robert Copper              205,000                      -

Richard D. Neece              135,000                      -

Fred L. Brown                  22,000                 20,000

Larry D. Marcus                15,000                 10,000

James F. O'Donnell             12,000                 10,000

David T. Pieroni               22,000                 20,000

</TABLE>

      Director and Officer Indemnification and Insurance.  The merger
agreement  provides  that Cerner and the surviving  corporation  will
indemnify and hold harmless each of CITATION's present directors  and
officers, determined as of the effective time of the merger,  against
any   costs  or  expenses  (including  reasonable  attorneys'  fees),
judgments, fines, losses, claims, damages or liabilities incurred  in
connection  with any claim, action, suit, proceeding or investigation
whether civil, criminal, administrative or investigative, arising out
of  or pertaining to matters existing or occurring at or prior to the
effective time, whether asserted or claimed prior to, at or after the
effective  time of the merger, to the fullest extent that would  have
been  permitted  under  Missouri  law  and  CITATION's  articles   of
incorporation or bylaws in effect on the date of the merger agreement
(and Cerner and the surviving corporation shall also advance expenses
as  incurred to the fullest extent permitted under applicable law and
CITATION's  articles of incorporation and bylaws, provided  that  the
person to whom expenses are advanced provides an undertaking to repay
such advances if it is ultimately determined that such person is  not
entitled  to  indemnification).  Cerner and the surviving corporation
shall  not  have any obligation to indemnify CITATION's  officers  or
directors  for any acts related to or arising out of the merger,  the
merger  agreement or the transactions contemplated thereby if and  to
the  extent such person's conduct was finally adjudged to  have  been
knowingly  fraudulent, deliberately dishonest or willful  misconduct.
In  addition,  the  merger  agreement provides  that  Cerner  or  the
surviving  corporation,  to the extent available,  will  maintain  in
effect,  for a period of five years after the merger, directors'  and
officers' liability insurance for the benefit of CITATION's directors
and  officers  who are currently covered under CITATION's  directors'
and  officers'  liability  insurance on  terms  not  materially  less
favorable  than  the existing insurance coverage; provided,  however,
Cerner or the surviving corporation is not obligated to pay an annual
premium in excess of 150% of the last annual premium paid by CITATION
prior to the date of the merger agreement

      Copper Employment Agreement.  J. Robert Copper has entered into
an  employment  agreement  with  Cerner,  effective  as  of  closing,
pursuant  to  which  he  will  serve as  Senior  Advisor,  Laboratory
Systems.  The term of the agreement is 20 months from the date of the
merger, and Mr. Copper is obligated to serve on average two to  three
days  a  month  in  a  consultative capacity to  Cerner's  laboratory
leadership team.  As consideration, Mr. Copper will receive a monthly
salary  of  $10,000,  reimbursement of  travel  expenses  and  health
insurance  and  benefits.   In addition, Mr.  Copper  has  agreed  to
terminate his current change of control agreement, pursuant to  which
he  would have been eligible to receive an amount equal to his annual
salary  as  severance  if  an involuntary change  in  his  employment
occurred within 12 months after a CITATION change of control.

      Neece Employment Agreement.  Richard D. Neece has entered  into
an  employment  agreement  with  Cerner,  effective  as  of  closing,
pursuant  to  which  he will serve as Vice President  and  Laboratory
Operating  Officer.   As  consideration,  Mr.  Neece  will  initially
receive an annual salary of $150,000, an annual performance bonus  of
up  to  $75,000,  options to purchase 1,900 shares of  Cerner  common
stock  at  the price of Cerner stock at the time of grant  and  other
benefits  available to full-time employees of Cerner.   In  addition,
Mr.  Neece  has  agreed to terminate his current  change  of  control

<PAGE>                             -34-

agreement,  pursuant to which he would have been eligible to  receive
an  amount  equal to his annual salary as severance if an involuntary
change  in his employment occurred within 12 months after a  CITATION
change of control.

Dissenters' Rights

     CITATION  shareholders  who follow the procedure  set  forth  in
Section  455 of The General and Business Corporation Law of  Missouri
will  be  entitled to receive payment in cash for their shares.   The
following  summary of Section 455 is not intended to  be  a  complete
statement  of  the law and is qualified in its entirety by  reference
thereto,  the full text of which is set forth as Appendix  D  hereto.
CITATION  shareholders  receiving cash upon exercise  of  dissenters'
rights  may  recognize  gain for federal income  tax  purposes.   See
"-Federal Income Tax Consequences" on page 32.

     A  CITATION  shareholder may assert dissenters' rights  only  by
complying with all of the following requirements:

     a.   The shareholder must deliver to CITATION prior to or at the
          special   meeting  a  written  objection  to   the   merger
          agreement.  Such objection should be delivered or mailed in
          time  to  arrive  before the special  meeting  to  CITATION
          Computer  Systems, Inc, 424 South Woods  Mill  Road,  Suite
          200,  Chesterfield,  Missouri 63017, Attention:   Corporate
          Secretary.   Such  a  written objection  must  be  made  in
          addition  to,  and separate from, any proxy or  other  vote
          against adoption of the merger agreement.  Neither  a  vote
          against,  a  failure  to vote for, or  an  abstention  from
          voting   will  satisfy  the  requirement  that  a   written
          objection  be  delivered to CITATION  before  the  vote  is
          taken.  Unless a shareholder files the written objection as
          provided  above,  he or she will not have  any  dissenters'
          rights of appraisal.

     b.   The  shareholder must not vote in favor of adoption of  the
          merger agreement; and

     c.   The shareholder must deliver to the combined company within
          twenty  days  after  the effective time  of  the  merger  a
          written demand for payment of the fair value of his or  her
          shares of CITATION common stock as of the day prior to  the
          date  of  the  CITATION shareholders meeting.  That  demand
          must  include  a  statement of  the  number  of  shares  of
          CITATION common stock owned.  The demand must be mailed  or
          delivered  to  the combined company at Cerner  Corporation,
          2800   Rockcreek  Parkway,  Kansas  City,  Missouri  64117,
          Attention:  Corporate Secretary.  Any shareholder who fails
          to  make a written demand for payment within the twenty-day
          period  after  the  effective  time  will  be  conclusively
          presumed to have consented to the merger agreement and will
          be  bound by the terms thereof.  Neither a vote against the
          merger agreement nor the written objection referred  to  in
          (a) satisfies the written demand requirement referred to in
          this clause (c).

     A beneficial owner of shares of CITATION common stock who is not
the record owner may not assert dissenters' rights.  If the shares of
CITATION  common  stock are owned of record in a fiduciary  capacity,
such  as by a trustee, guardian or custodian, or by a nominee or  are
held in "street name" by a brokerage firm or bank, the written demand
asserting  dissenters'  rights must be  executed  by  the  fiduciary,
nominee, broker or bank.  If the shares of CITATION common stock  are
owned  of  record by more than one person, as in a joint  tenancy  or
tenancy  in common, the demand must be executed by all joint  owners.
An authorized agent, including an agent for two or more joint owners,
may  execute  the  demand for a shareholder of record;  however,  the
agent must identify the record owner and expressly disclose the  fact
that,  in executing the demand, he is acting as agent for the  record
owner.

     If  within thirty days of the effective time of the merger,  the
value  of a dissenting shareholder's shares of CITATION common  stock
is  agreed upon between the shareholder and the combined company, the
combined  company will make payment to the shareholder within  ninety
days  after  the effective time, upon the shareholder's surrender  of
his  or  her  certificates.  Upon payment of the  agreed  value,  the
dissenting shareholder will cease to have any interest in such shares
or in the combined company.

     If  the  dissenting shareholder and the combined company do  not
agree  on  the fair value of the shares within thirty days after  the
effective time of the merger, the dissenting shareholder may,  within
sixty  days after the expiration of the thirty days, file a  petition
in  any  court of competent jurisdiction within Clay County, Missouri
asking  for  a finding and a determination of the fair value  of  the
shares.   The dissenting shareholder is entitled to judgment  against
the  combined company for the amount of such fair value as of the day
prior  to  the date on which such vote was taken adopting the  merger
agreement,  together with interest thereon to the date  of  judgment.
The  judgment  is  payable  only upon  and  simultaneously  with  the
surrender  to  the  combined  company of  the  CITATION  certificates
representing  said  shares.   Upon  payment  of  the  judgment,   the
dissenting  shareholder  shall cease to have  any  interest  in  such
shares or in the combined company.  Unless the dissenting shareholder
will  file  such  petition  within  the  time  herein  limited,  such
shareholder and all persons claiming

<PAGE>                            -35-

under such shareholder will be conclusively presumed to have  adopted
and  ratified  the  merger  agreement, and will be bound by the terms
thereof.

     The  right of a dissenting shareholder to be paid the fair value
for  his or her shares will cease if the shareholder fails to  comply
with  the  procedures  of Section 455 or if the merger  agreement  is
terminated for any reason.

     CITATION  shareholders  considering demanding  the  purchase  of
their  shares at fair market value should keep in mind that the  fair
value of their shares determined under Section 455 could be more, the
same,  or  less  than  the merger consideration  to  which  they  are
entitled pursuant to the merger if they do not demand the purchase of
their shares at fair value.

     The  summary set forth above does not purport to be  a  complete
statement of the provisions of Section 455 relating to the rights  of
dissenting CITATION shareholders and is qualified in its entirety  by
reference  to Section 455, which is included as Appendix  D  to  this
proxy  statement/prospectus.   CITATION  shareholders  intending   to
demand the purchase of their shares at fair value are urged to review
carefully the provisions set forth in Appendix D and to consult  with
legal counsel so as to be in strict compliance therewith.

Conditions to the Merger

     Completion  of  the  merger is subject  to  various  conditions.
While  it  is anticipated that all such conditions will be satisfied,
there  can  be  no  assurance  as to whether  or  when  all  of  such
conditions  will  be  satisfied or, where permissible,  waived.   The
respective obligations of Cerner and CITATION to complete the  merger
are  subject to certain conditions set forth in the merger agreement,
including the following:

       Approval  of  the merger agreement by the holders of  at  least
       two-thirds  of  all the outstanding shares of CITATION  common
       stock;

       The   effectiveness  of  the  registration  statement  for  the
       shares of Cerner common stock to be issued in the merger;

       The   receipt   of   all   state   securities   or   blue   sky
       authorizations necessary to complete the merger;

       The  approval by the Nasdaq National Market of the  listing  of
       the  shares of Cerner common stock to be issued in the merger,
       subject to official notice of issuance;

       The   receipt   of   all  required  regulatory  approvals   and
       expiration of all related statutory waiting periods;

       The  absence of any order, decree or injunction of a  court  or
       agency   of   competent  jurisdiction  which   prohibits   the
       completion of the merger;

       The   absence   of  any  statute,  rule  or  regulation   which
       prohibits,  restricts  or  makes  illegal  completion  of  the
       merger;

       The   accuracy   of  the  other  party's  representations   and
       warranties  contained in the merger agreement as of  the  date
       specified  therein,  except, in  the  case  of  most  of  such
       representations  and warranties, where  a  failure  to  be  so
       accurate  would  not be reasonably likely to have  a  material
       adverse  affect  on the party making such representations  and
       warranties,  and  the performance by the other  party  of  its
       obligations contained in the merger agreement in all  material
       respects;

       The  receipt  by  each  party  of an  opinion  of  its  counsel
       substantially  to the effect that the merger will  be  treated
       for  federal  income  tax purposes as a reorganization  within
       the meaning of Section 368(a) of the Internal Revenue Code;

       The  execution  and  delivery of employment agreements  by  and
       between  each  J.  Robert  Copper and  Richard  D.  Neece  and
       Cerner;

<PAGE>                               -36-

       The  receipt by each party of an opinion of the others  counsel
       as   to   certain  corporate  matters  regarding  Cerner   and
       CITATION;

       The  absence  of  any material adverse change in the  financial
       condition,  results  of operations or cash  flows  or  assets,
       liabilities,  business  or prospects  of  Cerner  or  CITATION
       since March 31, 2000; and

       The  receipt  by  Cerner  of  affiliate  agreements  from  each
       affiliate of CITATION.

Regulatory Approval

     Pursuant  to the Hart-Scott-Rodino Act, the merger  may  not  be
completed  until  after  Cerner  and  CITATION  have  given   certain
information  and  materials to the Federal  Trade  Commission  and  a
required  waiting period has expired or has been terminated.   Cerner
and CITATION submitted notification and report forms on May 19, 2000.
Early termination was granted May 31, 2000.

Conduct of Business Pending the Merger

     Until either the merger is completed or the merger agreement  is
terminated,  CITATION  has agreed to carry on  its  business  in  the
ordinary  course  in substantially the same manner  as  it  conducted
prior  to the execution of the merger agreement.  CITATION has agreed
to   certain  limitations  on  its  ability  to  engage  in  material
transactions.  Among those limitations, CITATION, subject to  certain
exceptions, will not, without the prior consent of Cerner:

       Amend its articles of incorporation or bylaws;

       Split,  combine  or reclassify any shares of capital  stock  of
       CITATION or declare, set aside or pay any dividend;

       (1)   Issue,  deliver  or  sell,  or  authorize  the  issuance,
       delivery  or sale of, any shares of CITATION capital stock  of
       any  class  or any securities convertible into or  exercisable
       for,  or  any rights, warrants or options to acquire any  such
       capital  stock or any such convertible securities, other  than
       certain  shares  issuable pursuant to  the  CITATION  employee
       plans,   or  (2)  amend  in  any  respect  any  term  of   any
       outstanding security of CITATION;

       Other   than  in  the  ordinary  course  of  business   or   as
       contemplated by the capital expenditure budgets for  CITATION,
       incur  any  capital expenditures or obligations or liabilities
       in excess of $75,000;

       Except  in  the  ordinary course of business,  acquire  in  one
       transaction  or  a  series  of related  transactions  (1)  any
       assets  having  a fair market value in excess of  $75,000,  or
       (2)  all or substantially all of the equity interests  of  any
       person  or  any  business or division of any person  having  a
       fair market value in excess of $75,000;

       Sell,  lease, license, perform services, encumber or  otherwise
       dispose  of  any assets, other than (1) sales or  licenses  of
       finished  goods or the performance of services in the ordinary
       course   of  business  consistent  with  past  practice,   (2)
       equipment  and  property no longer used in  the  operation  of
       CITATION's  business, and (3) assets related  to  discontinued
       operations of CITATION;

       (1)  incur  any  indebtedness for borrowed money  or  guarantee
       any  such  indebtedness, (2) issue or sell any debt securities
       or  warrants  or  rights  to acquire any  debt  securities  of
       CITATION,   (3)   make   any  loans,   advances   or   capital
       contributions to or investments in, any other person,  or  (4)
       guarantee  any debt securities or indebtedness  of  others  in
       any  case in an amount in excess of $50,000, except,  in  each
       case, in the ordinary course of business consistent with  past
       practice;

       (1)  enter  into  any agreement or arrangement that  limits  or
       otherwise restricts CITATION or any of its affiliates  or  any
       successor thereto or that would, after the effective  time  of
       the  merger,  limit  or  restrict  CITATION  or  the  combined
       company,  or any of their respective affiliates, from engaging
       or  competing  in any line of business or in any location,  or
       (2)  enter  into,  amend,  modify or  terminate  any  material
       contract,  agreement or arrangement of CITATION  or  otherwise
       waive,  release  or  assign  any material  rights,  claims  or
       benefits  of CITATION thereunder; provided, however,  CITATION
       may  enter  into material contracts with customers,  suppliers
       or  distributors, so long as such contracts are  entered  into
       in  the  ordinary course and consistent with CITATION's  prior
       practice;

<PAGE>                              -37-

       (1)  except  as  required  by  law or  a  pre-existing  written
       agreement,  or  as consistent with past practice  and  routine
       raises   on   anniversary  dates,  increase  the   amount   of
       compensation of any director or executive officer or make  any
       increase  in or commitment to increase any employee  benefits,
       (2)   except  as  required  by  law,  a  preexisting   written
       agreement  or  a  CITATION severance  policy  existing  as  of
       May  15, 2000, grant any severance or termination pay  to  any
       director,  officer or employee of CITATION or, (3)  adopt  any
       additional  employee benefit plan or, except in  the  ordinary
       course   of   business  consistent  with  past  practice   and
       containing   only  normal  and  customary  terms,   make   any
       contribution  to any such existing plan or (4) except  as  may
       be  required  by  law  or a preexisting written  agreement  or
       employee  benefit  plan,  or  as contemplated  by  the  merger
       agreement,  enter  into, amend in any respect,  or  accelerate
       the  vesting  under  any  CITATION employee  plan,  employment
       agreement,    option,   license   agreement   or    retirement
       agreements,  or  (5)  hire any employee with  an  annual  base
       salary in excess of $75,000;

       change  (1)  CITATION's  methods of  accounting  in  effect  at
       March  31,  2000  except as required by changes  in  GAAP,  as
       concurred with by its independent public accountants,  or  (2)
       CITATION's fiscal year;

       (1)  settle,  propose  to settle or commence,  any  litigation,
       investigation, arbitration, proceeding or other claim that  is
       material  to the business of CITATION, other than the payment,
       discharge or satisfaction, in the ordinary course of  business
       consistent  with past practice of liabilities  (a)  recognized
       or  disclosed  in  the CITATION financial statements  (or  the
       notes  thereto) or (b) incurred since March 31,  2000  in  the
       ordinary course of business consistent with past practice,  or
       (2)   make  any  material  tax  election  or  enter  into  any
       settlement  or compromise of any tax liability other  than  in
       the   ordinary  course  of  business  consistent   with   past
       practices and containing only normal and customary terms;

       enter into any new material line of business; or

       except  to  the extent required to comply with its  obligations
       under  the merger agreement or required by law, CITATION shall
       not   amend   or   propose  to  so  amend  its   articles   of
       incorporation, bylaws or other governing documents.

No Solicitation

     CITATION has agreed that it will not nor shall it authorize  its
officers,   directors,  employees,  investment  bankers,   attorneys,
accountants,  agents  or  other advisors or  representatives  to  (a)
solicit, initiate or knowingly facilitate or encourage the submission
of  any  "acquisition proposal for CITATION," (b) participate in  any
discussions or negotiations regarding, or furnish to any  person  any
information  with respect to, or take any other action  knowingly  to
facilitate  any  inquiries or the making of any acquisition  proposal
for CITATION, (c) grant any waiver or release under any standstill or
similar agreement with respect to any class of CITATION capital stock
or  (d)  enter  into  any agreement with respect to  any  acquisition
proposal for CITATION.  "Acquisition proposal for CITATION" means any
offer  or  proposal  for  a  merger, consolidation,  share  exchange,
business  combination, reorganization, recapitalization, issuance  of
securities, liquidation, dissolution, tender offer or exchange  offer
or  other similar transaction or series of transactions involving, or
any  purchase  of ten percent or more of the assets, or  directly  or
indirectly  acquires beneficial ownership of securities representing,
or exchangeable for or convertible into, more than ten percent of the
outstanding securities of any class of voting securities of  CITATION
or  in  which CITATION issues securities representing ten percent  of
the  outstanding  securities of any class  of  voting  securities  of
CITATION,  other  than  the transaction contemplated  by  the  merger
agreement.

     However,  under the merger agreement, CITATION is  permitted  to
furnish  information to, and enter into negotiations  with,  a  third
party making a takeover proposal if:

          CITATION  receives  from  such third  party  an  unsolicited
          "superior  proposal" of the type described below  prior  to
          the   approval   of  the  merger  agreement   by   CITATION
          shareholders;

          The  CITATION  board of directors concludes in  good  faith,
          after receiving advice from outside counsel and independent
          financial  advisor, that CITATION must do so  in  order  to
          comply with its fiduciary duties under applicable law; and

          Prior   to   doing  so,  CITATION  enters  into   reasonably
          customary  confidentiality and standstill  agreements  with
          such third party.

<PAGE>                              -38-

     CITATION  is required to notify Cerner immediately if  any  such
negotiations  are sought to be initiated or continued in  respect  of
any such takeover proposal, together with all of the relevant details
of the negotiations.  CITATION also may communicate information about
any  takeover proposal to its shareholders if its board of  directors
determines, based on advice of outside counsel and financial advisor,
that such communication is required under applicable law.

     "Superior  proposal"  means  any  bona  fide  written   takeover
proposal for all outstanding shares of CITATION common stock  or  all
or  substantially all of the assets of CITATION on  terms  which  the
board  of directors of CITATION determines in its good faith judgment
(based  on a written opinion of CITATION's financial advisor)  to  be
materially more favorable to CITATION and its shareholders  than  the
merger  (taking into account any changes to the financial  and  other
contractual  terms  of  the merger agreement proposed  by  Cerner  in
response to such proposal, the person making the proposal, any  legal
or  regulatory  considerations   and  all  other  relevant  financial
and   strategic   considerations,   including   the  timing   of  the
consummation  of  such  transactions) and for which financing, to the
extent  required, is  then  committed  or  which, in  the good  faith
judgment  of  the  board  of  directors  of  CITATION, is  reasonably
capable of being obtained by such third party.

Waiver and Amendment

     Prior  to  or at the effective time of the merger, any provision
of   the   merger  agreement,  including,  without  limitation,   the
conditions to consummation of the merger, may be (a) waived,  to  the
extent permitted under law, in writing by the party which is entitled
to  the  benefits  thereof; or (b) amended at  any  time  by  written
agreement  of  the parties, whether before or after approval  of  the
merger  agreement by the shareholders of CITATION.  However, no  such
amendment  or modification may be made after the CITATION shareholder
approval  without  the  further  approval  of  such  shareholders  if
required under any applicable law, rule or regulation.

Termination of the Merger Agreement

     The  merger  agreement and the merger may be terminated  at  any
time prior to the completion of the merger:

               By mutual written consent of Cerner and CITATION;

               By  Cerner  or  CITATION, if the merger  has  not  been
               consummated  by December 30, 2000, provided  that  the
               right to terminate shall not be available to any party
               whose  breach of any provision of the merger agreement
               has resulted in the failure of the merger to occur  on
               or before such date;

               By  Cerner or CITATION, if there shall be any law  that
               makes  consummation of the merger illegal or otherwise
               prohibited  or  any  judgment,  injunction,  order  or
               decree  of  any  governmental entity having  competent
               jurisdiction  enjoining  Cerner,  CITATION  or  Cerner
               Performance  Logistics,  Inc.  from  consummating  the
               merger  is  entered and such judgment, injunction,  or
               order shall have become final and nonappealable;

               By  Cerner or CITATION, if the CITATION shareholders do
               not approve the merger agreement on or before December
               30, 2000;

               By  Cerner  or CITATION, if there has been  a  material
               breach  of  any  of  the representations,  warranties,
               covenants  or  agreements of the other  party  in  the
               merger agreement which shall constitute a failure of a
               condition  to  the  completion  of  the  merger  which
               condition shall be incapable of being satisfied before
               December 30, 2000;

               By  Cerner,  if  there shall have occurred  an  adverse
               change   in   the   CITATION   board   of   directors'
               recommendation  that  its  shareholders  approve   the
               merger;

               By  Cerner, if there shall have occurred a willful  and
               material  breach by CITATION or any of  its  officers,
               directors, employees, advisors or agents of CITATION's
               covenant  not to solicit, participate in or  negotiate
               an acquisition proposal;

               By   Cerner,   if   CITATION  fails  to   include   the
               recommendation of its board in favor of  the  adoption
               and  approval of the merger agreement and the approval
               of the merger in this proxy statement/prospectus;

<PAGE>                                -39-

               By  Cerner, if the board of directors of CITATION shall
               have  approved, endorsed or recommended any  competing
               or alternative acquisition proposal of CITATION;

               By   Cerner,  if  a  tender  offer  or  exchange  offer
               relating to the securities of CITATION shall have been
               commenced  and  CITATION shall not have  sent  to  its
               shareholders,   within   ten   business days after the
               commencement  of  such  tender  or  exchange  offer, a
               statement   disclosing   that   CITATION    recommends
               rejection of such tender or exchange offer;

               By  CITATION,  if  it  receives a  bona  fide  superior
               proposal  as  discussed above under "-No Solicitation"
               on page 38; or

               Automatically, if the merger is enjoined by a court  of
               competent  jurisdiction for a period extending  beyond
               ninety days.

     Effect of Termination

     If the merger agreement is terminated, it will thereafter become
void and there will be no liability on the part of Cerner or CITATION
or their respective officers or directors, except that:

          Any  such  termination  will  be without  prejudice  to  the
          rights  of  any party arising out of the willful breach  by
          the other party of any provision of the merger agreement;

          Certain provisions of the merger agreement, including  those
          relating  to  confidential treatment  of  information  will
          survive the termination; and

          Cerner  and  CITATION  each will bear its  own  expenses  in
          connection  with the merger agreement and the  transactions
          contemplated thereby, except as otherwise provided therein.

     CITATION  has agreed to pay to Cerner upon demand a  termination
fee of $600,000 (a) if the merger agreement is terminated because the
CITATION  shareholders  do not approve the  merger  agreement  on  or
before  December 30, 2000, and the closing price per share of  Cerner
common  stock, as reported by the Nasdaq National Market, is  greater
than  $24.00  on  at  least  ten  of the  last  twenty  trading  days
immediately preceding the date for the CITATION shareholder  meeting,
or  (b)  if  CITATION  elects  to accept an  alternative  acquisition
proposal or to withdraw or modify its recommendation of the merger as
a result of an alternative acquisition proposal.

Nasdaq National Market Listing

     The Cerner common stock is traded on the Nasdaq National Market.
Cerner  has  agreed to use its reasonable best efforts to  cause  the
shares of Cerner common stock to be issued in the merger to be listed
on  the  Nasdaq National Market.  It is a condition to completion  of
the merger that those shares be listed on the Nasdaq National Market,
subject to official notice of issuance.

Effective Time

     It  is  presently  anticipated that the effective  time  of  the
merger  will  occur  sometime  during  the  third  quarter  of  2000.
However,  completion of the merger could be delayed  if  there  is  a
delay  in satisfying any conditions to the merger.  There can  be  no
assurances as to whether, or when, Cerner and CITATION will  complete
the merger.  If the merger is not completed on or before December 30,
2000,  either Cerner or CITATION may terminate the merger  agreement,
unless the failure to complete the merger by that date is due to  the
failure  of  the party seeking to terminate the merger  agreement  to
perform its covenants under the merger agreement.

<PAGE>                              -40-

                   INFORMATION REGARDING CITATION

Business

      CITATION  designs,  develops,  markets  and  supports  patient-
centered   clinical  information  systems  for  hospitals,   clinics,
physicians'   groups  and  emerging  Integrated   Delivery   Networks
("IDNs").  CITATION offers a comprehensive suite of clinical products
using open client/server architecture that meets a broad range of the
information systems needs of the healthcare industry.  These products
integrate  patient care processes within the enterprise.   CITATION's
systems  are  modular, scaleable and allow clients to leverage  their
investments in existing systems.  Individual components of CITATION's
systems  can  function independently, giving clients the  ability  to
build their system over time and to integrate existing software which
is  meeting their current needs.  CITATION's systems are installed in
approximately 300  institutions  ranging  in size from under 100 beds
to over  1,000  beds. CITATION markets its products  directly  in the
United States and  Canada, as  well  as through distribution partners
in Europe, India, Latin America and the Far East.

The Company

      CITATION  was  organized  in 1979 as  a  Missouri  corporation.
CITATION's  principal executive office is located at 424 South  Woods
Mill  Road, Suite 200, Chesterfield, Missouri 63017 (a suburb of  St.
Louis) and its telephone number is (314) 579-7900.

      In  June  1998,  CITATION sold its suite of financial  software
products  to  allow  it  to focus on its clinical  applications.  The
following description of the business excludes these products.

Industry Background

      The  U.S.  healthcare  industry  is  undergoing  rapid  change.
Historically, reimbursement for healthcare services has been based on
a  fee-for-service  model of payment.  With  increasing  pressure  to
reduce  costs,  managed  care  organizations  and  other  payors  are
shifting  the  economic risk for the delivery of  care  to  providers
through  alternative reimbursement models, including  capitation  and
fixed  fees.   As a result, healthcare providers such  as  hospitals,
multi-specialty  physician  groups,  laboratories,  pharmacies,  home
health  services  and nursing homes are integrating horizontally  and
vertically  to create IDNs.  IDNs are designed to serve  all  of  the
healthcare needs of regional populations while achieving economies of
scale.

     In order to lower healthcare delivery costs while maintaining or
improving  the  quality  of patient care, providers  need  access  to
detailed  clinical  information to:   (a)  manage  the  patient  care
process  throughout the IDN; (b) automate patient care documentation;
(c)  compare care provider performance and clinical and cost outcomes
both  within  the organization and to established norms; (d)  monitor
performance  under  managed  care  contracts;  (e)  monitor  practice
patterns  of  care  providers; (f) measure the effectiveness  of  new
technologies  and  therapeutics; and (g) support  intra-  and  inter-
facility   communication.    A  comprehensive   clinical   healthcare
information  system  must  be  able to  assist  both  clinicians  and
administrators   in  managing  patient  information  throughout   the
continuum of care.

       Certain   information-intensive  departments   of   healthcare
organizations,   such  as  laboratories,  were  early   adopters   of
information  systems in order to manage workflow and  clinical  data.
However,   as   multiple  legacy  systems  have  become  increasingly
prominent  on  an  enterprise-wide basis, the  integration  of  these
systems  across  the enterprise has become more difficult  given  the
different  architectures, platforms and operating  systems  of  these
information systems.

       Integration  and  accessibility  to  patient  information  are
increasingly   necessary   for  healthcare   providers   to   operate
efficiently  and improve the quality of patient care.   As  the  need
for   readily   accessible  information  throughout  the   healthcare
enterprise continues to grow, hospitals, providers and payors of  all
sizes  are  faced  with  the  challenge  of  implementing  healthcare
information  systems  that  are scalable,  capable  of  working  with
existing information systems and flexible to adapt to changes in  the
healthcare marketplace.  Also, such systems must be patient-centered,
integrating all aspects of managing the healthcare process.

The CITATION Solution

      CITATION designs, develops, markets and supports products  that
address  the  healthcare industry's need for patient-centered,  fully
integrated   clinical   information  systems.  CITATION's   principal
products  are  designed  using  a

<PAGE>                           -41-

modular,  client/server  approach,  offering  clients  the  ability to
build   their   systems   over  time  and  to  allow  existing  legacy
applications to interoperate with  CITATION's products.

Business Strategy

      CITATION's goal is to leverage its experience of more  than  20
years  with client/server application solutions to become  a  leading
provider  of  clinical  healthcare information  systems.   CITATION's
strategy for achieving this goal includes the following elements:

      Leverage  Existing  Client Base.  With  an  installed  base  of
approximately 300 facilities, CITATION believes it has the  potential
to  cross-sell  additional products to its existing  clients  because
many  of those clients have not purchased all of CITATION's products.
CITATION's products are modular in design and can be added over  time
as each client's needs expand and evolve.

      Expand Product Portfolio.  CITATION plans to expand its product
line to meet the evolving needs of its clients.  CITATION continually
evaluates  its  offerings to determine what  additional  products  or
enhancements  are  required  by  the healthcare  information  systems
marketplace and CITATION develops and enhances products internally to
meet  clients'  needs.  If CITATION can purchase  or  license  proven
products at reasonable cost on its chosen technology base it will  do
so  in  order  to avoid the time and expense involved  in  developing
products.

      Expand  Presence in the Asia Pacific and Latin America Markets.
CITATION believes that a significant opportunity exists to expand the
sales  of  its  products in these international markets.   Healthcare
providers  in  a  number  of  countries  have  not  yet  invested  in
sophisticated information systems, and increasingly they are  seeking
to   purchase   state-of-the  art  products,  particularly   clinical
information  systems. CITATION believes that its open,  client/server
architecture  and modular, scalable systems provide a  cost-effective
solution   to   these   markets.   CITATION   has   entered   several
international  markets  through a combination  of  direct  sales  and
distribution arrangements.

      Seek  Opportunities  with  National  Accounts.   CITATION  will
continue  to  work  with the current National  Hospital  Accounts  to
introduce  C-RIS and C-COM for small facilities.  CITATION will  also
target new groups for its complete line of products.

Products

      CITATION  has  developed  a  comprehensive  suite  of  clinical
products  to  manage  information in the  healthcare  enterprise.   A
client  can  purchase  a  comprehensive system  or  can  buy  modules
separately  to  match a user's individual needs.  CITATION's  systems
address   the  information  needs  of  care  providers  and  hospital
administrators  by  enabling  joint  access  to  clinical  and   cost
information,   thereby   facilitating   cost-containment,   effective
decision making and delivery of high quality care.

     CITATION's clinical suite of products currently consists of four
primary  components,  each of which can operate independently  or  as
part of a fully integrated system.

           C-COM   captures and tracks comprehensive patient clinical
     information  and  routes that information among  departments  or
     systems  in  the healthcare organization, enabling providers  to
     evaluate quality of care, productivity and cost-effectiveness of
     services.  C-COM  accepts orders from and displays the resulting
     information at any networked PC location where patient  care  is
     being  delivered, such as a nursing station or even the bedside.
     C-COM  also is Internet-enabled and supports hand-held, wireless
     technology.  C-COM  is available for Windows   and  Windows  NT
     client and server.

            C-LAB    provides  comprehensive  laboratory   automation
     solutions  for  clinics, single and multiple site hospitals  and
     clinical and research laboratories. C-LAB  automates order entry
     and dissemination of results and interfaces with care providers'
     systems.    C-LAB    sub-modules   consist   of   General   Lab,
     Microbiology,  Anatomical Pathology and Blood Bank.   The  Blood
     Bank   submodule   is   licensed  by  CITATION   for   use   and
     implementation in C-LAB.  C-LAB  is available in  DOS,  Windows
     and Windows NT.

           C-RIS  is a radiology management system providing  patient
     tracking,    transcription,   radiology   reporting,    auto-fax
     capabilities,   statistical  reporting,  film   management   and
     mammography management.  C-RIS is available in Windows NT.

<PAGE>                             -42-

           NuCaMS  is  an  order  entry and patient  care  management
     system, which is designed to increase the productivity of nurses
     and  other  clinicians  and  to  assist  in  the  creation,  and
     management   of  care  plans  and  clinical  pathways.    NuCaMS
     documents variances against established care plans and  clinical
     pathways, enabling care providers to focus on both improving the
     quality of care and controlling costs.  This system enables  the
     healthcare   enterprise  to  allocate  resources  and   schedule
     procedures and tests automatically.  NuCaMS is available in DOS.

Services

       Client   service  is  an  important  component  of  CITATION's
operations.   At  June  30,  2000, CITATION employed  30  persons  in
client   services.   The  client  services  team  generally  provides
implementation,  application and support,  education  and  consulting
services   to  CITATION's  clients  and  primarily  employs   medical
technologists  and other healthcare professionals in  supporting  and
implementing  healthcare information systems.  Instrument  interface,
network  consulting,  operating  system  and  hardware  support   are
provided  by  experts in each area.  Additional client  services  are
provided  through  computer-based training or formal  instructor-led,
CITATION-sponsored ongoing educational courses and seminars.

      In  addition,  CITATION  provides  comprehensive  training  for
clients  at  its  headquarters  near St.  Louis.   Before  CITATION's
product  becomes  operational,  training  is  also  provided  at  the
client's  location.   CITATION provides additional  training  at  the
client's  request  for a fee.  CITATION offers a maintenance  program
covering  hardware  replacement,  software  upgrades,  and  telephone
consulting service.  Depending on the type of system, CITATION offers
service  contracts for periods of one to five years. Customer support
is available 24 hours a day.

      CITATION  also offers its services to design and configure  the
architecture  of a provider's systems, including networking,  systems
integration  and data conversion.  Further, CITATION provides  advice
on  data  analysis  to  assist  care providers  in  evaluating  their
operations.

     Product Development

      CITATION  is dedicated to providing state-of-the-art integrated
clinical systems for healthcare. The cornerstone of CITATION's system
is   its   long-standing  commitment  to  client/server   technology.
CITATION's multi-tiered products are modular in nature, using an open
architecture that is integratable with third party systems as well as
other CITATION systems.

      CITATION's  current  product development  efforts  use  object-
oriented programming methodologies.  This allows CITATION to  develop
applications  based  on  reusable libraries  of  code  that  CITATION
believes results in more cost-effective and rapid product development
cycles.   CITATION is a Microsoftr Solutions Provider and extensively
employs  Microsoftr toolsets and standards in its product development
efforts.   CITATION  believes  use  of  these  standards  and   tools
facilitates  interfacing with other systems and  products.   CITATION
also  supports other industry standards such as HL/7,  ASTM  and  the
Novell Netware Network Operating System.

      CITATION plans to expand its clinical product line to meet  the
evolving  needs  of its clients. CITATION continually  evaluates  its
offerings  to determine what additional products or enhancements  are
required by the healthcare information systems marketplace.  CITATION
develops and enhances products internally to meet clients' needs, but
if  CITATION  can purchase or license proven products  at  reasonable
costs  it will do so in order to avoid the resource time and  expense
involved  in  developing products.  CITATION actively seeks  out  for
acquisition and licensing other companies and products that fit  into
CITATION's overall product and technology plan.  There is significant
competition for suitable acquisition candidates and there can  be  no
assurance  that  CITATION  will be able to  successfully  acquire  or
license additional products.

      During  the fiscal years ended March 31, 2000 and 1999, CITATION
invested $3.4 million and $3.2 million, respectively, in research  and
development.   At  June  30,  2000, CITATION employed  32  persons  in
research  and  development.   CITATION expects  to  continue  to  make
significant  investments in research and development,  however,  there
can  be  no  assurance  that  CITATION's financial  and  technological
resources   will  permit  it  to  develop  or  market   new   products
successfully or respond effectively to technological changes.

<PAGE>                          -43-

Sales and Marketing

      CITATION  markets its products in the United States and  Canada
through  a  direct  sales  force under the  direction  of  CITATION's
Executive Vice President of Sales and Marketing.  At June  30,  2000,
CITATION's sales force consisted of seven employees.  In addition  to
CITATION's   sales  force  employees,  CITATION  has  a   four-person
marketing  team  that promotes CITATION's products,  participates  in
trade  shows  and  demonstrates CITATION's  products.   In  addition,
members  of  CITATION's development and client  services  departments
provide pre-sales support for CITATION's direct sales force in making
presentations to and preparing comprehensive proposals for  potential
customers.

       CITATION   markets   its   products  internationally   through
distribution  alliances in the Far East and Latin America.   CITATION
has  a  strategic relationship with Medical Communications Pte. Ltd.,
formerly   Microstate   Separations  Pte.  Ltd.   ("Microstate"),   a
healthcare   information  systems  integrator  based  in   Singapore.
Microstate  has  purchased  CITATION's systems  for  the  Indonesian,
Malaysian,  Hong  Kong  and  Singapore  markets.  In  Latin  America,
CITATION   has   a  strategic  arrangement  with  Laboratories   Para
Laboratorios.

Regulation

      CITATION is subject to the general requirements of the Food and
Drug Administration's regulations for Class I Medical Devices because
it produces a suite of clinical software products.  CITATION complies
with   these   regulations  and  follows  Medical  Device   Reporting
guidelines as well.

      Additional legislation governing the dissemination  of  medical
record  information  has  been  proposed.   CITATION  is  unable   to
determine  at  this time the effect, if any, that these  requirements
may have on its business.

      In  addition,  the healthcare industry is subject  to  changing
political,  economic and regulatory influences that  may  affect  the
procurement  practices and operations of healthcare providers.   Many
lawmakers  have  announced that they intend to  propose  programs  to
reform  the  U.S.  healthcare  system.  These  programs  may  contain
proposals  to increase governmental involvement in healthcare,  lower
reimbursement  rates and otherwise change the regulatory  environment
in  which CITATION's clients operate.  Healthcare providers may react
to  these proposals and the uncertainty surrounding such proposals by
curtailing  or deferring investments, including those for  CITATION's
healthcare information systems.  Even if healthcare providers do  not
curtail  or  defer  investments, they may institute  cost-containment
measures  in anticipation of regulatory reform or for other  reasons.
These measures may result in greater selectivity in the allocation of
capital  funds,  which  could  have  a  material  adverse  effect  on
CITATION's  ability  to sell its healthcare information  systems  and
services.  CITATION cannot predict with any certainty what impact, if
any,  such  legislative or market-driven reforms might  have  on  its
business  and results of operations.  There can be no assurance  that
such  proposed changes, if adopted, would not have a material adverse
effect on CITATION's business and results of operations.

Employees

      At  June  30,  2000, CITATION employed 93  persons.   Of  these
employees,  32  were involved in product development,  30  in  client
services, 10 in sales and marketing and 21 in general administration,
clerical and finance.  CITATION's employees are not represented by  a
labor union and CITATION's management believes that its relationships
with its employees are good.

Backlog

      CITATION  sells  its products on a purchase order  basis,  with
shipments of "turnkey" systems made shortly after receipt of executed
purchase orders.  As a result, the level of backlog at any particular
time is not necessarily an indication of future results.

Properties

      CITATION's  principal  facilities consisting  of  approximately
32,000 square feet are located in Chesterfield, Missouri, a suburb of
St. Louis.  The lease expires in May 2004.

<PAGE>                            -44-

Legal Proceedings

      From time to time, CITATION is subject to litigation and claims
in the ordinary course of business. CITATION currently is not a party
to  any  pending  legal  proceedings,  other  than  ordinary  routine
litigation incidental to its business.

           CITATION'S MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS


     Overview

     CITATION   designs,  develops,  markets  and  supports  clinical
information  systems for hospitals, clinics, physicians'  groups  and
emerging  Integrated Delivery Networks ("IDNs").  CITATION  offers  a
comprehensive  suite  of products designed using  open  client/server
architecture  that  meets  a broad range of the  information  systems
needs  of the healthcare industry.  These products integrate  patient
care   processes  within  the  enterprise  and  throughout  the  IDN.
CITATION's  systems  are  modular, scaleable  and  allow  clients  to
leverage   their   investments  in  existing   systems.    Individual
components  of CITATION's systems can function independently,  giving
clients  the ability to build their system over time and to integrate
existing  software.   CITATION's clinical systems  are  installed  in
approximately  300 institutions ranging in size from  less  than  100
beds to more than 1,000 beds.  CITATION markets its products directly
in  the  United  States  and Canada, as well as through  distribution
partners in the Asia Pacific area and Latin America.

     In May 2000, CITATION announced that it had entered a definitive
agreement for a business combination with Cerner.  Under terms of the
agreement, CITATION shareholders will receive 0.1695 shares of Cerner
stock   for  90%  of  CITATION  stock  and  $5.10  in cash for 10% of
CITATION stock, resulting in the issuance of 598,000 shares of Cerner
stock for 90% of CITATION and payment of approximately $2 million for
the remaining  10%  of  the Company. The transaction, which as to the
stock  portion  will  be  tax-free to CITATION shareholders and which
will be accounted for  as a purchase by  Cerner, is expected to close
in the third quarter this calendar year  pending CITATION shareholder
approval and  regulatory approval.

     CITATION generates revenues from the sale of information systems
and  services.   System sales consist of software  licenses,  related
hardware,  installation  and training, and the  sale  of  third-party
software.   Hardware revenues are generated from sales of third-party
manufactured  hardware typically sold in conjunction with  CITATION's
software.  Service revenue includes maintenance and support services.

      Revenue from systems sales is recognized upon shipment  to  the
client.   Revenue  related to the installation is recognized  as  the
work  is  performed.  Service revenue is recognized ratably over  the
term of the contract period.

     Cost of products and services sold includes cost of system sales
and  cost of service revenue.  Cost of system sales includes cost  of
hardware  sold,  installation  and  training  expenses  and  software
amortization  costs.   Cost of service revenue  includes  all  client
service  expenses  plus  an  allocation  of  certain  other  overhead
expenses.

      Research and development expenses include salaries and expenses
related to development and documentation of software systems and  are
reduced   by   capitalized  software  development  costs.    Software
development  costs  are  expensed until such  time  as  technological
feasibility  is  established and are capitalized in  compliance  with
Statement of Financial Accounting Standards No. 86.

     Sales  and  marketing  expenses include  salaries,  commissions,
advertising,  trade show costs and user group costs  related  to  the
sale and marketing of CITATION's systems.  General and administrative
expenses  include salaries and expenses for corporate administration,
finance,  legal,  and  human resources, as  well  as  profit-sharing,
bonuses and insurance.

Other Non-recurring Charges, Including Sale of the Financial Software
Line of Business.

      In  June  1998,  CITATION sold the financial software  line  of
business, including its accounts receivable, patient billing, general
ledger,  accounts  payable, fixed assets, inventory control,  medical
records  abstracting  and registration software modules  to  Sterling
Systems based in Downey, Idaho.  This line of business accounted  for
approximately $1.8 million of revenue and contributed a  pretax  loss
of  $0.2  million in fiscal 1998. Revenues from this line of business
in  fiscal 1999 were $0.3 million through the date of its sale.   The
transaction resulted in an aggregate pretax loss of $0.7 million  and

<PAGE>                             -45-

an  after tax loss of approximately $0.4 million, or $0.11 per share.
The  loss  included the write-off of approximately  $0.5  million  of
capitalized software development costs associated with this  software
and  an  additional  charge  of $0.6 million  based  on  management's
estimates  of  the  collectibility  of  certain  accounts  receivable
related   to   its  former  financial  software  line  of   business.
Approximately  $0.4  million of the sales  price  for  this  line  of
business  is reflected in other accounts receivable on the March  31,
2000  Consolidated  Balance Sheet; payment  thereof  is  expected  in
fiscal year 2001.

      Also  in  June  1998, CITATION announced it was in  discussions
about  a  possible business combination with MEDASYS Digital Systems,
S.A.,  a  French Company with U.S. offices in Miami and Chicago.   On
December  9, 1998, CITATION and MEDASYS Digital Systems, S.A.  agreed
to   terminate  a  previously  announced  Agreement   and   Plan   of
Reorganization  to combine the two companies.  The companies  entered
into a joint marketing agreement with respect to clinical information
systems  in  the  fourth quarter of fiscal 1999.  During  the  fourth
quarter  of fiscal 1999, CITATION recorded a non-operating charge  of
$0.5 million relative to costs associated with the efforts to achieve
a business combination with MEDASYS.

     In  the  fourth  quarter of fiscal 1998 CITATION  recorded  non-
recurring  pretax  charges of approximately $1.0 million  related  to
customer  matters regarding discontinued products ($0.8 million)  and
for   non-operating  costs  related  to  the  strategic   review   of
alternatives following an unsolicited expression of interest  in  the
Company  ($0.2  million).  See Note 5 of the  Notes  to  Consolidated
Financial Statements beginning on page F-12.

Fourth Quarter Fiscal 2000 Results

      CITATION  reported a net loss for the fourth quarter of  fiscal
2000  of  $0.1  million, or $0.03 per share.  The  results  from  the
fourth  quarter  were  negatively impacted  by  reduced  spending  by
potential  customers  due to their recent large  information  systems
expenditures related to the Y2K upgrades.  Revenues and gross  profit
for   the   fourth  quarter  were  $2.6  million  and  $1.5  million,
respectively.

Results of Operations

     The  following  table  sets  forth, for  the  period  indicated,
certain items from the Company's Consolidated Statement of Operations
expressed as a percentage of total revenues.

<TABLE>

                                                                                  Year Ended March 31,
                                                                                -----------------------
                                                                                2000      1999     1998
                                                                                ----      ----     ----
Revenues:
<S>                                                                             <C>       <C>      <C>
System sales..................................................................   55.9%     53.8%    49.4%
Service revenue...............................................................   44.1      46.2     50.6
                                                                                -----     -----    -----
Total revenues................................................................  100.0     100.0    100.0

Cost of products and services sold............................................
Cost of system sales..........................................................   37.9      37.9     37.6
Cost of service revenue.......................................................   10.7      12.0     12.3
                                                                                -----     -----    -----
Total cost of products and services sold......................................   48.6      49.9     49.9

Gross profit..................................................................   51.4      50.1     50.1

Research and development......................................................   16.7      14.7     19.2
Selling and administrative....................................................   32.2      32.3     40.2
Loss on sale of financial systems business and other non-recurring charges....     --       4.1      5.0
                                                                                -----     -----    -----
Total operating expense.......................................................   48.9      51.1     64.4
                                                                                -----     -----    -----
Operating income (loss).......................................................    2.5      (1.0)   (14.3)
Other income (expense)........................................................
Interest income...............................................................    0.2       0.4      0.5
Interest expense..............................................................   (0.7)     (0.8)    (1.0)
Other, net....................................................................    0.1      (2.8)    (1.2)
                                                                                -----     -----    -----

Income (loss) before taxes....................................................    2.1      (4.2)   (16.0)
Provision (benefit) for income taxes..........................................    0.8      (1.6)    (6.1)
                                                                                -----     -----    -----
Net income (loss).............................................................    1.3%     (2.6)%   (9.9)%
                                                                                =====     =====    =====

</TABLE>

<PAGE>                              -46-

Comparison of Fiscal Year Ended March 31, 2000 to Fiscal Year  Ended
March 31, 1999.

Revenue

     Total  revenues decreased 7.5% to $15.0 million in  fiscal  2000
from $16.1 million in fiscal 1999, which reflected a 3.2% decrease in
system  sales and a 12.9% decrease in service revenue.   Fiscal  1999
included $0.3 million of revenues from the financial software line of
business, which was sold in June 1998.

     Clinical  system sales remained at $8.4 million in  both  fiscal
2000  and  1999.   This  reflected the  caution  shown  by  potential
customers  in  the  aftermath of the Y2K upgrades.   Clinical  system
sales  represented 55.9% and 51.9% of total revenues in fiscal  years
2000 and 1999, respectively.

      Service  revenue decreased to $6.6 million in fiscal 2000  from
$7.5  million in fiscal 1999.  The 11.4% decrease primarily reflected
the  lack of growth in new system sales and the reduction in renewals
of  service  contracts  from  existing  customers.   Service  revenue
represented  44.1% and 46.2% of total revenues in fiscal  years  2000
and 1999, respectively.

Cost of Products and Services Sold and Gross Profit

      For  fiscal 2000 and 1999, total cost of products and  services
sold were $7.3 million and $8.0 million, respectively, representing a
9.3%  decrease  in  fiscal  2000.  The total  cost  of  products  and
services  sold as a percentage of total revenues was 48.6% in  fiscal
2000  and  49.9%  in  fiscal 1999.  The cost of  system  sales  as  a
percentage of system sales revenue decreased to 67.7% in fiscal  2000
from  70.5% in fiscal 1999 due to the decreased percentage  of  lower
margin  hardware sales.  The cost of service revenue as a  percentage
of  service revenue decreased to 24.4% in fiscal 2000 from  25.9%  in
fiscal  1999 due primarily to a decrease in related costs.   Software
amortization costs of $1.2 million in fiscal 2000 and $1.7 million in
fiscal 1999 represented 16.2% and 20.5%, respectively, of total costs
of products and services sold for fiscal years 2000 and 1999.

      Due to the foregoing factors, gross profit, as a percentage  of
total  revenues, was 51.4% and 50.1% in fiscal years 2000  and  1999,
respectively.

Research and Development Expenses

<TABLE>

                                                                     Fiscal Year Ended March 31,
                                                                            (In thousands)
Software Development Expense                                              2000          1999
----------------------------                                              ----          ----
<S>                                                                     <C>           <C>
Research and development spending....................................   $ 3,350       $ 3,177
Less - software development capitalized..............................       851           808
                                                                        -------       -------
Total research and development expense...............................     2,499         2,369
Amortization of software development costs...........................     1,184         1,650
                                                                        -------       -------
Total software development expenses..................................   $ 3,683       $ 4,019
                                                                        =======       =======

Capitalized Software Development Cost, Net                                 2000          1999
------------------------------------------                                 ----          ----
Beginning of period..................................................   $ 1,775       $ 2,880
Research and development capitalized per above.......................       851           808
Software acquired (C-RIS)*...........................................         -           250
                                                                        -------       -------
                                                                          2,626         3,938
Write-off - Financial products capitalized software development costs**       -          (539)
Amortization of software development costs...........................    (1,184)       (1,650)
Other adjustments....................................................        13            26
                                                                        -------       -------
End of period........................................................   $ 1,455       $ 1,775
                                                                        =======       =======

</TABLE>

*     Software  acquired  related to the purchase  of  the  radiology
system.  See Note 4 of the Consolidated Financial      Statements for
further information.
**   See Note 2 of the Consolidated Financial Statements for further
information.

<PAGE>                            -47-

Selling and Administrative Expenses

      Selling  and administrative expenses as a percentage  of  total
revenues decreased to 32.2% in fiscal 2000 from 32.3% in fiscal 1999.
Total  selling and administrative expenses decreased $0.4 million  to
$4.8  million.  This decrease was primarily due to lower selling  and
marketing costs and lower administrative costs to support operations.

Other Operating Expenses

       See   previous  discussion  of  other  non-recurring  charges,
including  sale  of  the financial software line of  business,  under
caption  "-  Other  non-recurring  charges,  including  sale  of  the
financial software line of business."

Operating Income (Loss)

      CITATION  recorded operating income of $0.4 million  in  fiscal
2000  compared  to  $0.5 million in fiscal 1999, excluding  the  $0.7
million loss on the sale of financial systems line of business.   The
change  primarily  reflected the factors described above.   Including
the  above non-recurring charges, the operating loss was $0.2 million
in fiscal 1999.

                                   -49-
<PAGE>

Income Taxes

     The Company's effective income tax rate was 40.0% in fiscal 2000
and the effective income tax benefit rate was 38.0% in fiscal 1999.

Net Income (Loss) and Income (Loss) Per Share

      Net income increased to $0.2 million in fiscal 2000 from a loss
of  $0.4  million  in fiscal 1999 as a result of  the  factors  noted
above.   Basic  and diluted income per share increased  to  $0.05  in
fiscal 2000 from a loss per share of $0.11 in fiscal 1999.

Comparison of Fiscal Year Ended March 31, 1999 to Fiscal Year  Ended
March 31, 1998.

Revenue

      Total  revenues decreased 3.1% to $16.1 million in fiscal  1999
from  $16.6 million in fiscal 1998 which reflects a 5.5% increase  in
system  sales and an 11.5% decrease in service revenue.  Results  for
fiscal  1999  and  1998  included  $0.3  million  and  $1.8  million,
respectively,  of  revenues  from  the  financial  software  line  of
business, which was sold in June 1998.

      Clinical system sales increased to $8.4 million in fiscal  1999
from  $6.4  million in fiscal 1998.  The 31.3% increase  in  clinical
system  sales was primarily attributable to the increase  in  systems
orders  of the Company's new NT products and the increase in hardware
sales  in  anticipation  of  Y2K  upgrades.   Clinical  system  sales
represented  51.9% and 38.5% of total revenues in fiscal  years  1999
and 1998, respectively.

      Service  revenue decreased to $7.5 million in fiscal 1999  from
$8.4 million in fiscal 1998.  The 11.5% decrease was primarily due to
the  sale  of the financial software line of business in  June  1998.
Service  revenue  represented 46.2% and 50.6% of  total  revenues  in
fiscal years 1999 and 1998, respectively.

Cost of Products and Services Sold and Gross Profit

      For  fiscal 1999 and 1998, total cost of products and  services
sold were $8.0 million and $8.3 million, respectively, representing a
3.1%  decrease  in  fiscal  1999.  The total  cost  of  products  and
services  sold  as a percentage of total revenues was 49.9%  in  both
fiscal  1999  and 1998.  The cost of system sales as a percentage  of
system sales revenue decreased to 70.5% in fiscal 1999 from 76.1%  in
fiscal  1998  due  to  the  increase in higher  margin  software  and
services  revenue in fiscal 1999.  The cost of service revenue  as  a
percentage of service revenue increased to 25.9% in fiscal 1999  from
24.3% in fiscal 1998.  Software amortization costs of $1.7 million in
fiscal  1999  and $2.1 million in fiscal 1998 represented  20.5%  and
25.1%, respectively, of total costs of products and services sold for
fiscal years 1999 and 1998.

      Gross  profit as a percentage of total revenues  was  50.1%  in
fiscal years 1999 and 1998.

<PAGE>                              -48-

Research and Development Expenses

<TABLE>

                                                                        Fiscal Year Ended March 31,
                                                                             (In thousands)
Software Development Expense                                              1999              1998
----------------------------                                            -------           -------
<S>                                                                     <C>               <C>
Research and development spending....................................   $ 3,177           $ 4,288
Less - software development capitalized..............................       808             1,089
                                                                        -------           -------
Total research and development expense...............................     2,369             3,199
Amortization of software development costs...........................     1,650             2,085
                                                                        -------           -------
Total software development expenses..................................   $ 4,019           $ 5,284
                                                                        =======           =======

Capitalized Software Development Cost, Net                                1999              1998
------------------------------------------                              -------           -------
Beginning of period..................................................   $ 2,880           $ 3,876
Research and development capitalized per above.......................       808             1,089
Software acquired (C-RIS)*...........................................       250                 -
                                                                        -------           -------
                                                                          3,938             4,965
Write-off - Financial products capitalized software development costs**    (539)                -
Amortization of software development costs...........................    (1,650)           (2,085)
Other adjustments....................................................        26                 -
                                                                        -------           -------
End of period........................................................   $ 1,775           $ 2,880
                                                                        =======           =======

</TABLE>

*     Software  acquired  related to the purchase  of  the  radiology
system.  See Note 4 of the Consolidated Financial      Statements for
further information.
**    See Note 2 of the Consolidated Financial Statements for further
information.

     The decrease in research and development spending in fiscal 1999
compared  to  fiscal  1998 was the result of the  completion  of  the
development of several Windows NT-based products during fiscal 1998.

Selling and Administrative Expenses

      Selling  and administrative expenses as a percentage  of  total
revenues decreased to 32.3% in fiscal 1999 from 40.2% in fiscal 1998.
Total  selling and administrative expenses decreased $1.5 million  to
$5.2  million.   This decrease was primarily due to  lower  personnel
costs and lower administrative costs to support operations.

Other Operating Expenses

       See   previous  discussion  of  other  non-recurring  charges,
including  sale  of  the financial software line of  business,  under
caption  "- Other non-recurring charges, including sale of  financial
software line of business."

Operating Loss

      CITATION  recorded operating income of $0.5 million  in  fiscal
1999,  excluding  the  $0.7 million loss on  the  sale  of  financial
systems  line  of business.  The operating loss for fiscal  1998  was
$1.6  million,  excluding the $0.8 non-recurring costs.   The  change
primarily reflects the factors described above.  Including the  above
non-recurring charges, the operating loss was $0.2 million in  fiscal
1999 compared to an operating loss of $2.4 million in fiscal 1998.

Income Taxes

      CITATION's effective income tax benefit rate was 38.0% in  both
fiscal 1999 and fiscal 1998.

Net Loss and Loss Per Share

      Net  loss decreased $1.3 million to $0.4 million in fiscal 1999
from  $1.7  million in fiscal 1998 as a result of the  factors  noted
above.  Basic and diluted loss per share decreased to $0.11 in fiscal
1999 from $0.43 in fiscal 1998.

<PAGE>                              -49-

Liquidity and Capital Resources

      CITATION's  primary sources of liquidity are  cash  flows  from
operations  and borrowing under its line of credit with a  bank.   At
March  31,  2000,  CITATION  had cash and cash  equivalents  of  $0.3
million compared to $0.2 million at March 31, 1999.

      Cash generated by operations was $2.1 million, $1.1 million and
$2.6 million in fiscal years 2000, 1999, and 1998, respectively.  Net
income  (loss)  plus  depreciation, amortization and  other  non-cash
charges  was  $2.2 million, $2.3 million and $1.3 million  in  fiscal
years 2000, 1999 and 1998, respectively.  Changes in operating assets
and  liabilities  (used)  generated cash of  ($0.1)  million,  ($1.2)
million  and  $1.3  million  in fiscal years  2000,  1999  and  1998,
respectively.  For the year ended March 31, 2000, CITATION used  $1.1
million   in   investing  activities  (including  $0.9  million   for
capitalized  software  development  and  $0.2  million  for   capital
expenditures).  Cash used by financing activities was  $0.9  million,
which  included $0.2 million of principal payments and  $0.7  million
repayments on the line of credit.

      Cash  decreased $0.2 million in fiscal 1999.  The decrease  was
primarily  due  to  $1.5  million used in investing  activities  (for
capitalized software, capital expenditures and purchase of the  C-RIS
system)   offset   by   cash   provided   by   financing   activities
(approximately $0.1 million of net proceeds from bank borrowings) and
operating activities.

      Cash  decreased $0.1 million in fiscal 1998.  The decrease  was
primarily  due  to  $1.5  million used in investing  activities  (for
capital expenditures and software development costs) and $1.1 million
of  principal payments on long-term debt offset substantially by cash
provided by operations.

      At March 31, 2000, CITATION had a line of credit agreement with
a  bank.   The line of credit allows CITATION to borrow  up  to  $4.0
million  through June 1, 2001 with interest at the bank's prime  rate
(9.0%  at  March  31,  2000).  The line  of  credit  and  term  notes
(approximately  $0.8  million outstanding  at  March  31,  2000)  are
secured  by  CITATION's  accounts receivable, inventory  and  general
intangible  assets.  The respective agreements require  that  certain
minimum  net  worth and leverage ratio requirements be maintained  by
CITATION.  CITATION was in compliance with these requirements or  has
obtained waivers as of March 31, 2000.  There were borrowings of $0.5
million  outstanding under the line of credit agreement as  of  March
31,  2000  ($3.5  million of additional borrowings  were  available),
which  have  been  classified as long-term  in  the  March  31,  2000
Consolidated Balance Sheet.

      CITATION has provided extended payment terms for software  sold
to  its  distributor in Singapore.  Collection of the  receivable  is
ultimately  dependent  on  the distributor's  cash  flows.   CITATION
believes  that this receivable, which is classified as long-term,  is
fully collectible.

      CITATION's  current commitments consist primarily of  operating
lease  obligations aggregating $2.2 million over the next five years.
The operating leases consist primarily of CITATION's office lease  in
St. Louis, Missouri, which expires in May 2004.

      CITATION believes that its cash and cash equivalents,  together
with  its  current  borrowing  facilities  and  cash  generated  from
operations,   will  be  sufficient  to  fund  its  anticipated   cash
requirements for at least the next 12 months.  CITATION's ability  to
meet  its  cash  requirements on a long-term  basis  will  depend  on
profitable  operations and consistent and timely collections  of  its
accounts receivable.

Inflation and Changing Prices

      CITATION  believes inflation has not had a material  effect  on
CITATION's operations or its financial condition.

New Accounting Standards

      During fiscal 1998, the American Institute of Certified  Public
Accountants  ("AICPA") issued Statement of Position  97-2,  "Software
Revenue  Recognition"  ("SOP  97-2").   SOP  97-2  is  effective  for
transactions  entered into in fiscal years beginning  after  December
15,  1997.  SOP 97-2 provides guidance on applying generally accepted
accounting principles in recognizing revenue on software transactions
and  supersedes SOP 91-1, "Software Revenue Recognition."   SOP  97-2
did  not  materially  impact the financial  position  or  results  of
operations of CITATION.

<PAGE>                            -50-

      In June 1998, the FASB issued Statement of Financial Accounting
Standards No. 133 "Accounting for Derivative Instruments and  Hedging
Activities"   ("FAS  133").   FAS  133  established  accounting   and
reporting  standards  for  derivative  instruments  and  for  hedging
activities and requires recognition of all derivatives on the balance
sheet  measured at fair value.  FAS 133 is effective for  all  fiscal
quarters  of all fiscal years beginning after June 15, 2000. CITATION
is  continuing to evaluate the provisions of FAS 133 to determine its
impact  on  CITATION's financial position and results of  operations,
although   CITATION  does  not  generally  enter  into   transactions
involving derivative instruments.

     In  December  1999,  the Securities Exchange Commission  ("SEC")
issued  Staff Accounting Bulletin No. 101 ("SAB 101").   SAB  101  is
effective  for  transactions entered into in fiscal  years  beginning
after  March  15, 2000.  SAB 101 provides a summary  of  the  general
application  of generally accepted accounting principles  to  revenue
recognition in the financial statements along with interpretations of
applying generally accepted accounting principles to selected revenue
recognition issues.  CITATION is currently evaluating the  provisions
of  SAB 101 to determine any impact on financial position and results
of operations.

Year 2000 Issue

      To  date,  CITATION  is not aware of any  significant  problems
regarding Year 2000 issues.  However, there is no assurance that,  in
the  future,  problems  will not develop  in  CITATION's  systems  or
products.

      Prior  to  December  31, 1999, CITATION identified,  corrected,
reprogrammed, and tested both its systems used internally as well  as
the  products  it  sells  for  Year  2000  compliance.   As  part  of
CITATION's Year 2000 compliance program CITATION has:  (i) identified
all  critical  software  sold  and used  by  CITATION  that  requires
modification  for  the  Year  2000; (ii)  received  written  or  oral
confirmation  from its telecommunications vendors that the  equipment
supplied  by  such  vendors is or will be Year 2000 compliant;  (iii)
instituted  a formal communication process to keep senior  management
apprised   of  significant  Year  2000  issues;  and  (iv)  completed
necessary Year 2000 modifications.

     CITATION does not expect that any future Year 2000 related costs
will have a material adverse effect on CITATION's financial position,
results  of operations or cash flow and that additional costs  to  be
incurred by CITATION with respect to Year 2000 issues will be  funded
from operating cash flows and/or CITATION's line of credit.  However,
if  all Year 2000 issues were not properly identified, or assessment,
remediation and testing were not effected timely with respect to Year
2000 problems that are identified, there can be no assurance that the
Year  2000  issue  will  not materially adversely  impact  CITATION's
results  of  operations or adversely affect CITATION's  relationships
with  customers, vendors or others.  Additionally, there  can  be  no
assurance that the Year 2000 issues of other entities will not have a
material  adverse  impact on CITATION's systems, financial  position,
cash flows or results of operations.

Market Risk

      In  the  ordinary course of business, CITATION  is  exposed  to
interest  rate  risks for borrowings under its bank line  of  credit.
CITATION  currently has elected not to hedge its  risks  relating  to
this  floating  rate debt.  CITATION does not enter  into  derivative
financial instruments for trading purposes.


                 COMPARATIVE RIGHTS OF SHAREHOLDERS

      The  rights of CITATION shareholders are currently governed  by
The  General and Business Corporation Law of Missouri and  CITATION's
articles of incorporation and bylaws.  As a result of the merger, the
shareholders  of CITATION will become shareholders of  Cerner,  whose
rights  are  governed  by the Delaware General  Corporation  Law  and
Cerner's  certificate  of  incorporation and  bylaws.  The  following
discussion is intended only to highlight certain differences  between
the  rights of corporate shareholders under Missouri law and Delaware
law  generally  and specifically with respect to the shareholders  of
CITATION  and  Cerner. The discussion is not intended as  a  complete
statement  of  all  such differences, and CITATION  shareholders  are
referred  to  those  laws and governing documents  for  a  definitive
treatment of the subject matter.

Certain   Differences  Between  Missouri  and  Delaware   Corporation
Statutes

     Shareholder  Approval  of Certain Corporate  Transactions.   The
Delaware  law  requires that a merger, consolidation, disposition  of
all  or  substantially all the assets or voluntary dissolution  of  a
corporation  be  approved by the affirmative vote  of  holders  of  a
majority  of the outstanding shares entitled to vote thereon  (except
as   indicated   below).   The

<PAGE>                          -51-

Missouri  law  requires   that  such transactions  be approved by the
affirmative vote of holders of at least two-thirds of the outstanding
shares entitled to vote thereon.   Both  the  Delaware  law  and  the
Missouri law require that mergers  be  approved  by   the  board   of
directors, but  only  the  Delaware law requires  board  of  director
approval  of  dispositions  of  all  or  substantially  all  of   the
corporation's assets.  Under  the  Delaware law, shareholder approval
is not required for mergers in which:

          the   certificate   of  incorporation  of   the   surviving
          corporation is not amended,

          shares of the surviving corporation outstanding before  the
          merger are unchanged, and

          new  shares to be issued in the merger do not exceed twenty
          percent of the shares outstanding before the merger.

     Amendment   of  Charter.   Under  the  Missouri  law,   proposed
amendments to the articles of incorporation may be submitted directly
to  the  shareholders for approval without the prior approval of  the
board of directors.  Amendments to the articles of incorporation must
be  approved by the affirmative vote of holders of a majority of  the
outstanding shares entitled to vote thereon.

      The  Delaware  law  requires that an amendment  to  a  Delaware
corporation's  certificate of incorporation first be adopted  by  the
board  of  directors  before  the  amendment  is  submitted  to   the
shareholders  for approval by the affirmative vote of  holders  of  a
majority of the outstanding shares entitled to vote thereon.

     Dissenters' Appraisal Rights.  The Missouri law grants appraisal
rights   to  dissenting  shareholders  in  connection  with  mergers,
consolidations and dispositions of all or substantially  all  of  the
assets  of the corporation.  The Delaware law grants appraisal rights
only  in  connection with mergers and consolidations, and  grants  no
appraisal rights with respect to mergers in which:

          dissenting shares are

          (a)  listed on a national securities exchange or designated
               as a national market system security on an interdealer
               quotation  system  by  the  National  Association   of
               Securities Dealers, Inc., or

          (b)  held of record by more than 2,000 shareholders, or

          the  corporation is the surviving corporation in the merger
          and  no  vote  of  its shareholders is required  under  the
          Delaware law, with certain exceptions.

     Anti-takeover  Statutes.  The Missouri law  contains  a  control
share  acquisition  statute and a business  combination  "moratorium"
statute.  Both statutes apply only to Missouri corporations that meet
certain  tests  with  respect to their  presence  in  Missouri.   The
Delaware  law  contains a business combination  "moratorium"  statute
that  generally  prohibits a Delaware corporation  from  engaging  in
mergers  or  other business combinations with any person  who  is  an
"interested shareholder" for a period of three years after the person
becomes  an  "interested shareholder," unless certain conditions  are
satisfied.

     Other   Constituency  Statute.   The  Missouri   law   expressly
authorizes   directors  to  consider  "non-monetary   factors"   when
analyzing  takeover bids.  The board of directors  is  authorized  to
consider  a  number  of factors in exercising its  business  judgment
concerning an acquisition proposal, including without limitation  the
following:

          the  adequacy of the consideration offered in  relation  to
          the   board's  estimate  of  the  current  value   of   the
          corporation  in  a freely-negotiated sale, the  liquidation
          value  of  the  corporation, and the future  value  of  the
          corporation  over  a  period of  years  as  an  independent
          entity, discounted to current value;

          existing  political, economic and other factors bearing  on
          security prices;

          whether  the  acquisition proposal might  violate  federal,
          state or local laws;

          social, legal and economic effects on employees, suppliers,
          customers and others having similar relationships with  the
          corporation,   and  on  the  communities   in   which   the
          corporation conducts its business;

<PAGE>                            52

          the  financial  condition  and earnings  prospects  of  the
          bidder; and

          the competence, experience and integrity of the bidder.

The Delaware law does not contain a similar provision.

     Shareholder Action by Written Consent.  The Delaware law permits
shareholders  to  act  without a meeting, without  prior  notice  and
without  a  vote, if consents in writing setting forth the action  so
taken  are  signed  by the holders of outstanding  stock  having  the
minimum  number  of votes that would be necessary to  authorize  such
action at a meeting at which all shares entitled to vote with respect
to  the  subject matter thereof were present and voted.  The Missouri
law  permits  such action without a meeting only if written  consents
setting  forth  the  action  so  taken  are  signed  by  all  of  the
shareholders  entitled  to vote on the matter.   Neither  Cerner  nor
CITATION shareholders may act by written consent.

     Amendment of Bylaws.  Under the Missouri law, the power to make,
alter, amend or repeal the bylaws of the corporation is vested in the
shareholders, unless and to the extent that such power is  vested  in
the  board of directors by the articles of incorporation.  Under  the
Delaware  law,  the shareholders have the power to  adopt,  amend  or
repeal  bylaws, provided that the corporation may in its  certificate
of  incorporation  confer such authority on the  directors  as  well.
Under  the  Delaware law, the fact that such power has been conferred
on  the  directors  does not limit the power of the  shareholders  to
adopt, amend or repeal bylaws.

     Inspection  of  Books  and  Records.  The  Missouri  law  grants
shareholders the right to inspect the shareholders' list and books of
the  corporation under such regulations as may be prescribed  by  the
corporation's  bylaws.   The Delaware law allows  any  stockowner  to
inspect  the  stockowners' list and books of the  corporation  for  a
purpose   reasonably  related  to  such  person's   interest   as   a
shareholder.

     Payment  of  Dividends.  Under the Missouri law,  the  board  of
directors  of a corporation may declare and the corporation  may  pay
dividends so long as the net assets of the corporation are  not  less
than  its  stated capital and the payment of the dividend  would  not
reduce  the  net assets of the corporation below its stated  capital.
Under the Delaware law, a corporation generally may pay dividends out
of  the corporation's surplus or, if the corporation has no available
surplus, out of net profits for the fiscal year in which the dividend
is declared or the preceding fiscal year.

Certain  Differences  Between CITATION's  and  Cerner's  Charter  and
Bylaws

     Removal   of   Directors.   Under  the  Cerner  certificate   of
incorporation  and  bylaws,  any director  or  the  entire  board  of
directors  of  Cerner may be removed from office only for  cause  and
only  by  the  affirmative vote of the holders  of  at  least  eighty
percent of the then outstanding shares entitled to vote.

     Under  the  CITATION articles of incorporation and  bylaws,  any
director  may be removed by the shareholders only for cause and  then
only by the affirmative vote of holders of at least two-thirds of the
issued and outstanding shares of CITATION stock entitled to vote  for
directors cast at a meeting of shareholders called for that purpose.

     Amendments  to  Charter.  Cerner's certificate of  incorporation
requires  the  affirmative vote of the holders  of  at  least  eighty
percent  of  the  then outstanding shares entitled  to  vote,  voting
together  as  a  single class, to amend or repeal the  provisions  of
Cerner's  certificate of incorporation regarding: (1) the  number  of
shares  that Cerner is authorized to issue (unless such amendment  is
approved by a majority of the disinterested directors, as defined  in
the  certificate of incorporation); (2) the number of  directors  and
the  classification of the Cerner board, and the filling of vacancies
on the Cerner board, the removal of directors  and  the  process  for
nominating  a  candidate for the Cerner board; (3) the  amendment  of
Cerner's  bylaws;  (4)  the required vote  to  approve  any  business
combination;   (5)   the   amendment  of  Cerner's   certificate   of
incorporation;  and  (6)  the prohibition of  shareholder  action  by
written consent or the calling of special meetings of shareholders.


<PAGE>                         -53-

     CITATION's  articles  of incorporation require  the  affirmative
vote  of  the  holders of at least two-thirds of the then outstanding
shares  entitled  to  vote  to  amend or  repeal  the  provisions  of
CITATION's articles of incorporation regarding (1) the prohibition of
cumulative voting; (2) the number of directors, the classification of
the CITATION  board, the filling of vacancies on the CITATION  board,
the  removal of directors and the process for nominating a  candidate
for  the CITATION board; (3) the amendment of CITATION's articles  of
incorporation;  (4)  the  amendment of  CITATION's  bylaws;  (5)  the
advance  notice  requirements for nominations of  candidates  to  the
CITATION  board  of  directors; (6) the  prohibition  of  shareholder
action by written consent; (7) the election by CITATION to be subject
to  the business combination statute under Missouri law; and (8)  the
election  of  CITATION  to opt out of the control  share  acquisition
statute under Missouri law.

     Amendments  to  Bylaws.  The Cerner certificate of incorporation
provides  that  the Cerner board of directors is empowered  to  make,
adopt,  alter,  amend or repeal the bylaws and the  shareholders  may
make,  adopt, alter, amend or repeal the bylaws upon the  affirmative
vote of the holders of at least eighty percent of the shares entitled
to vote, voting together as a single class.

     The CITATION articles of incorporation provide that the CITATION
board has the power to make, and from time to time repeal, amend  and
alter the bylaws, provided, that the shareholders  may repeal, amend,
and alter the bylaws upon the affirmative vote of holders of at least
two-thirds  of  the  shares  entitled to vote  for  the  election  of
directors at any annual or special meeting of shareholders.

     Special  Meetings of Shareholders.  Special meetings of Cerner's
shareholders  may be called only by the chairman of the Cerner  board
of  directors,  the  president of Cerner or the  board  of  directors
pursuant  to a resolution approved by a majority of the entire  board
of directors.

     Pursuant  to  CITATION's  bylaws,  a  special  meeting  of   the
shareholders  may  be  called  by the  chairman  of  the  board,  the
president or by the board of directors.

     Notice   of  Shareholder  Proposals  and  Director  Nominations.
Cerner's  bylaws  permit shareholders entitled to  vote  to  nominate
candidates for election to Cerner's board of directors and  introduce
other  business  that  is a proper matter for shareholder  action  in
connection  with  any annual or special meeting of shareholders  with
respect  to the nomination of a director and in connection  with  any
annual  meeting  of shareholders with respect to any  other  proposed
matter.   In either case, the shareholder must provide timely  notice
to  the  secretary  of  Cerner and the notice must  contain  specific
information as further delineated in Cerner's bylaws.  To be  timely,
notice must be delivered to and received by Cerner not less than  120
days  prior to the date of the meeting at which directors are  to  be
elected  or the proposed business is to be conducted or, with respect
to  an election to be held at a special meeting of shareholders, such
notice must be delivered not later than the close of business on  the
seventh  day  following the day on which notice of  such  meeting  is
first given to shareholders.

     Under the CITATION bylaws, a shareholder may nominate a director
for  election  to  CITATION's board of directors if  the  shareholder
delivers  timely notice in writing to the secretary of CITATION.   To
be  timely, notice must be delivered not less than 120 days nor  more
than  180 days prior to the anniversary of the previous year's annual
meeting  of  shareholders.   In addition,  the  notice  must  contain
specific  information  as further delineated  in  CITATION's  bylaws.
CITATION's  bylaws also permit shareholders to present  proposals  at
the  annual meeting of shareholders if such proposal is submitted  to
the  company in the form and in accordance with the time requirements
of  Rule 14a-8 promulgated under the Securities Exchange Act of 1934,
as amended.  Generally, Rule 14a-8 requires a shareholder to submit a
proposal  to the company not less than 120 calendar days  before  the
date  of  the  company's proxy statement released to shareholders  in
connection with the previous year's annual meeting.

     Personal  Liability  of  Directors.  The Cerner  certificate  of
incorporation  limits the personal liability of directors  of  Cerner
for  monetary damages resulting from a breach of fiduciary duty as  a
director  to  the fullest extent permitted under Delaware  law.   The
CITATION  articles  of incorporation requires CITATION  to  indemnify
each  of  the  directors  to the full extent  permitted  by  laws  of
Missouri  but  does  not contain any express limitation  on  personal
liability.

     Business Combination Restrictions.  Cerner has opted out of  the
interested  stockholder provisions of Delaware law which  prohibit  a
corporation  from  engaging  in  any  business  combination  with  an
interested stockholder (defined as a fifteen percent stockholder) for
a  period  of three years after the date that stockholder  became  an
interested stockholder unless certain conditions are met.  Under  the
Cerner certificate of incorporation, any business combination with an
interested  stockholder  (as defined in  the  Cerner  certificate  of
incorporation)  or  an  affiliate thereof, must  be  approved  by

<PAGE>                           -54-

an affirmative vote of the holders of at least eighty percent  of the
total  outstanding  shares of voting stock,  treated  as  one  class,
except  that  such  business  combination  shall  require  only   the
affirmative  vote  as is required by law if the business  combination
has  been  approved by a majority of the disinterested  directors  of
Cerner.   Missouri  law  contains a  similar  provision  to  that  of
Delaware to which CITATION has expressly chosen to be subject.

     Shareholder  Rights Plan.  CITATION does not have a  shareholder
rights plan.  Cerner does maintain a shareholder rights plan which is
designed to (a) protect shareholders from attempts to acquire control
of  Cerner  without the approval of Cerner's board  and  (b)  prevent
abusive  tactics  from  potential acquirors that  do  not  treat  all
shareholders  fairly.  The  rights issued  under  the  plan  are  not
currently  exercisable or transferable, and no separate  certificates
evidencing  such  rights will be distributed, unless  certain  events
occur.   The  Cerner rights agreement was not intended to  prevent  a
takeover  of  Cerner. However, it may cause substantial  dilution  to
certain  persons or groups that beneficially acquire ten  percent  or
more of Cerner common stock unless the rights issuable under the plan
are first redeemed by the Cerner board of directors. Accordingly, the
rights  agreement  may result in Cerner being less  attractive  to  a
potential acquiror and, in the event that the existence of the rights
issuable  under  the plan did deter certain potential acquirors,  the
plan could result in holders of Cerner common stock receiving less in
the event of a takeover.

                               EXPERTS

     The  financial  statements and the related  financial  statement
schedule  included in the Cerner Annual Report on Form 10-K  for  the
fiscal  year ended January 1, 2000, that are incorporated  herein  by
reference,  have  been  audited  by  KPMG  LLP,  independent   public
accountants,  as stated in their reports included in the  Form  10-K,
and  have been incorporated by reference herein in reliance upon such
reports  given  upon  the  authority  of  that  firm  as  experts  in
accounting and auditing.

     The  audited  financial statements of CITATION as of  March  31,
2000  and  1999 and for each of the three years in the  period  ended
March  31,  2000,  included  in this proxy  statement/prospectus  and
registration statement of which this proxy statement/prospectus is  a
part   have   been  so  included  in  reliance  on  the   report   of
PricewaterhouseCoopers LLP, independent accountants, given  upon  the
authority of said firm as experts in auditing and accounting.

                            LEGAL MATTERS

      The  validity  of  the  Cerner common stock  to  be  issued  in
connection with the merger will be passed upon for Cerner by Stinson,
Mag  & Fizzell, P.C.  In addition, certain federal income tax matters
relating to the merger will be passed upon for Cerner by Stinson, Mag
& Fizzell, P.C., and for CITATION by Thompson Coburn LLP.

                    FUTURE SHAREHOLDER PROPOSALS

      CITATION will hold its 2000 annual meeting of shareholders only
if  the  merger  is  not consummated. In the event  that  the  annual
meeting  is  held, CITATION shareholders may submit proposals  to  be
considered  for shareholder action at CITATION's 2000 annual  meeting
of   shareholders  if  they  do  so  in  accordance  with  applicable
regulations  of  the SEC and applicable provisions of CITATION's  by-
laws.    Any  proposals should have been received by the Secretary of
CITATION by March 1, 2000  in order to be considered for inclusion in
CITATION's  2000  annual  meeting  proxy  materials.  Any   proposals
intended  to  be presented at the 2000 annual meeting of shareholders
but not submitted to CITATION for inclusion in CITATION's 2000 annual
meeting proxy materials should have been received by the Secretary of
CITATION by May 16, 2000.

<PAGE>                           -55-

                 WHERE YOU CAN FIND MORE INFORMATION

     Cerner has filed with the SEC a registration statement on Form S-
4  with respect to the Cerner common stock to be issued to holders of
CITATION  common stock in connection with the merger.  This  document
is part of the registration statement and constitutes a prospectus of
Cerner  in addition to being a proxy statement of  CITATION  for  its
special meeting of shareholders.  This document does not contain  all
of  the  information contained in the registration statement  or  the
exhibits  to the registration statement as allowed by the  rules  and
regulations  of  the  SEC.   Copies  of  the  registration  statement
including exhibits, may be inspected, without charge, at the  offices
of  the Securities and Exchange Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549, and copies may be obtained from  the  SEC  at
prescribed rates.

     In  addition,  Cerner  and CITATION file annual,  quarterly  and
special reports, proxy statements and other information with the  SEC
in  accordance with the informational requirements of the  Securities
and  Exchange  Act  of  1934.  You may read  and  copy  any  reports,
statements  or  other  information Cerner or  CITATION  file  at  the
following locations of the SEC:

Public Reference Room    Regional Office      Regional Office
450 Fifth Street N.W.    500 West Madison   7 World Trade Center
      Room 1024               Street             Suite 1300
   Washington, D.C.         Suite 1400       New York, New York
        20549           Chicago, Illinois          10048
                              60661

     Copies  of these materials may also be obtained from the SEC  at
prescribed  rates by writing to the Public Reference Section  of  the
SEC, 450 Fifth Street, N.W., Washington, D.C. 20549.  Please call the
Securities  and  Exchange  Commission at 1-800-SEC-0330  for  further
information on the public reference rooms.  The SEC also maintains an
Internet  world wide web site that contains reports, proxy statements
and  other information regarding issuers like Cerner and CITATION who
file electronically with the SEC at http\\www.sec.gov.

     You  can  also  inspect  reports,  proxy  statements  and  other
information  of  Cerner and CITATION at the offices of  the  National
Association  of  Securities  Dealers,  Inc.,  1735  K  Street,  N.W.,
Washington, D.C. 20006.

     The  SEC permits Cerner and CITATION to incorporate by reference
information that is not contained in this document.  This means  that
Cerner  and  CITATION can disclose important information  to  you  by
referring you to another document filed separately with the SEC.  The
information  incorporated by reference is deemed to be part  of  this
document,  except  for any information superseded by  information  in
this document.  This document incorporates by reference the documents
listed below that Cerner and CITATION have previously filed with  the
SEC.   They  contain  important information about our  companies  and
their financial condition.

<TABLE>

Cerner SEC Filings                   Period
------------------                   ------

<S>                                  <C>
Annual Report on Form 10-K           Year ended December 31, 1999, as
                                     filed on March 29, 2000
Quarterly Report on Form 10-Q        Quarter ended March 31, 2000, as
                                     filed on May 15, 2000 and amended
                                     on May 16, 2000

</TABLE>

<TABLE>

CITATION SEC Filings                 Period
--------------------                 ------
<S>                                  <C>
Annual Report on Form 10-KSB         Year ended March 31, 2000, as filed
                                     on June 2, 2000

</TABLE>

     All  documents and reports filed by Cerner with the SEC  between
the  date  of  this proxy statement/prospectus and the  date  of  the
special   meeting  of  CITATION  shareholders  are  incorporated   by
reference  into  this  document.  These  documents  include  periodic
reports,  such as annual reports on Form 10-K, quarterly  reports  on
Form  10-Q  and  current  reports on  Form  8-K,  as  well  as  proxy
statements.

     Cerner has supplied all information contained or incorporated in
this  document  relating to Cerner.  CITATION has supplied  all  such
information relating to CITATION.

     You can obtain any of the documents incorporated by reference in
this  document  through  Cerner or from the  SEC  through  the  SEC's
Internet  world  wide  web  site  at  the  address  described  above.
Documents  incorporated by reference are available from the companies
without charge, excluding any exhibits to those documents, unless the
exhibit  is  specifically incorporated by reference as an exhibit  in
this   proxy   statement/prospectus.   You   can   obtain   documents
incorporated  by

<PAGE>                         -56-

reference  in  this proxy  statement/prospectus  by  requesting  them
in  writing  or  by  telephone  from  the  appropriate company at the
following addresses:


                    Cerner Corporation, Inc.
                     2800 Rockcreek Parkway
                  Kansas City, Missouri  64117
                Telephone Number: (816) 221-1024
                    Attention:  Randy D. Sims


                 CITATION Computer Systems, Inc.
              424 South Woods Mill Road, Suite 200
                  Chesterfield, Missouri  63017
                         (314) 579-7900
                  Attention:  Maureen Gallagher

     If  you would like to request documents from us, please do so by
August  7,  2000  in  order  to  receive  them  before  the  CITATION
shareholder meeting.  Documents will be sent first class mail  within
one day upon receipt of a request.

     We  have  not authorized anyone to give any information or  make
any  representation  about  the  merger  of  our  companies  that  is
different from, or in addition to, that information contained in this
proxy  statement/prospectus or in any of the  materials  that  Cerner
and/or  CITATION  have  incorporated by  reference  into  this  proxy
statement/prospectus.  Therefore, if anyone does give you information
of  this  sort,  you  should  not rely  on  it.   If  you  are  in  a
jurisdiction  where offers to exchange or sell, or  solicitations  of
offers  to  exchange  or  purchase, the securities  offered  by  this
document or the solicitation of proxies is unlawful, or if you are  a
person  to  whom it is unlawful to direct these types of  activities,
then the offer presented in this document does not extend to you.

     This  document   is   dated  July  6,  2000.   You   should  not
assume that the information contained in this document is accurate as
of  any  date other than such date, and neither the mailing  of  this
document  to  shareholders of CITATION nor  the  issuance  of  Cerner
common  stock  in  the  merger shall create any  implication  to  the
contrary.

<PAGE>                            -57-

                  INDEX TO FINANCIAL STATEMENTS OF
                   CITATION COMPUTER SYSTEMS, INC.

<TABLE>

                                                             Page

<S>                                                           <C>
Report of Independent Accountants...................          F-2

Consolidated Balance Sheet..........................          F-3

Consolidated Statement of Operations................          F-5

Consolidated Statement of Shareholders' Equity......          F-6

Consolidated Statement of Cash Flows................          F-7

Notes to Consolidated Financial Statements..........          F-9

</TABLE>

<PAGE>                          F-1

Report of Independent Accountants

To  the  Shareholders  and Board of Directors  of  CITATION  Computer
Systems, Inc.

     In  our opinion, the accompanying consolidated balance sheet and
the  related  consolidated statements of operations, of shareholders'
equity  and  of cash flows present fairly, in all material  respects,
the  consolidated  financial position of CITATION  Computer  Systems,
Inc. and its subsidiaries at March 31, 2000 and 1999, and the results
of  their operations and their cash flows for each of the three years
in  the  period  ended March 31, 2000, in conformity with  accounting
principles generally accepted in the United States.  These  financial
statements  are  the responsibility of the Company's management;  our
responsibility is to express an opinion on these financial statements
based  on  our  audits.   CITATION  conducted  our  audits  of  these
statements  in accordance with auditing standards generally  accepted
in  the  United States, which require that CITATION plan and  perform
the  audit to obtain reasonable assurance about whether the financial
statements  are  free of material misstatement.   An  audit  includes
examining,  on  a  test basis, evidence supporting  the  amounts  and
disclosures  in  the financial statements, assessing  the  accounting
principles  used  and significant estimates made by  management,  and
evaluating  the  overall financial statement presentation.         We
believe  that our audits provide a reasonable basis for  the  opinion
expressed above.

PricewaterhouseCoopers LLP
St. Louis, Missouri
May 10, 2000

<PAGE>                             F-2

CITATION Computer Systems, Inc.
Consolidated Balance Sheet
(Thousands, except share amounts)

<TABLE>

                                                                         March 31,
                                                                   2000           1999

<S>                                                             <C>            <C>
ASSETS
Current Assets:
   Cash and cash equivalents..................................  $    295       $    204
   Accounts receivable:
     Trade, net of allowance for doubtful accounts of $186 and
       $212, respectively.....................................     5,900          6,857
     Other (Note 2)...........................................       456            445
   Inventories (Note 8).......................................       327            348
   Prepaid expenses and other current assets..................       423            369
   Deferred tax assets (Note 10)..............................        80            142
                                                                --------       --------

     Total current assets.....................................     7,481          8,365
                                                                --------       --------
Software development costs, net of accumulated amortization of
    $13,551 and $12,367 respectively (Note 1).................     1,455          1,775
                                                                --------       --------
Property and equipment:
   Furniture and fixtures.....................................       843            843
   Hardware and shop equipment................................     3,322          3,091
   Leasehold improvements.....................................       120            120
   Vehicles...................................................        37             37
                                                                --------       --------
                                                                   4,322          4,091

   Less - accumulated depreciation and amortization...........    (3,801)        (3,392)
                                                                --------       --------

     Net property and equipment...............................       521            699
                                                                --------       --------

Long-term deferred tax assets (Note 10).......................       910          1,104
Other assets (Note 6).........................................     1,704          1,935
                                                                --------       --------
                                                                   2,614          3,039
                                                                --------       --------

Total assets..................................................  $ 12,071       $ 13,878
                                                                ========       ========

</TABLE>

The  accompanying  notes  are an integral part  of  the  consolidated
financial statements.

<PAGE>                                  F-3

CITATION Computer Systems, Inc.
Consolidated Balance Sheet - continued
(Thousands, except share amounts)

<TABLE>
                                                                                     March 31,
                                                                                2000           1999

LIABILITIES AND SHAREHOLDERS' EQUITY

<S>                                                                         <C>           <C>
Current Liabilities:
     Current portion of long-term debt (Note 9)...........................  $    197       $    239
     Accounts payable.....................................................       271          1,223
     Customer deposits....................................................       149            236
     Accrued commissions..................................................        66            139
     Other accrued liabilities............................................       181            211
     Deferred service revenue.............................................     2,502          2,521
                                                                            --------       --------

       Total current liabilities..........................................     3,366          4,569

Long-term debt (Note 9)...................................................       622          1,491
                                                                            --------       --------
                                                                               3,988          6,060
                                                                            --------       --------

Commitments and contingencies (Notes 7, 13 and 14).......................
Shareholders' Equity (Notes 1 and 11):...................................
  Preferred stock; par value $.01 per share; 5,000,000 shares
    authorized; no shares issued and outstanding.........................
  Common stock; par value $.10 per share; 10,000,000 shares
    authorized; 3,876,655 and 3,838,344 shares issued and outstanding,
    respectively.........................................................       388            384
  Paid-in capital........................................................     6,668          6,596
  Retained earnings......................................................     1,027            838
                                                                           --------       --------

                                                                              8,083          7,818
                                                                           --------       --------

Total liabilities and shareholders' equity...............................  $ 12,071       $ 13,878
                                                                           ========       ========

</TABLE>

The accompanying notes are an integral part of the consolidated
financial statements.

<PAGE>                             F-4

CITATION Computer Systems, Inc.
Consolidated Statement of Operations
(Thousands, except per share amounts)

<TABLE>

                                                                       Year Ended March 31,
                                                                2000          1999           1998

<S>                                                            <C>           <C>           <C>
Net system sales and service revenue:
   System sales                                                $ 8,387       $ 8,669       $  8,214
   Service revenue                                               6,609         7,459          8,426
                                                               -------       -------       --------
                                                                14,996        16,128         16,640
                                                               -------       -------       --------
   Cost of products and services sold
   System sales                                                  5,679         6,110          6,252
   Service revenue                                               1,615         1,934          2,048
                                                               -------       -------       --------
                                                                 7,294         8,044          8,300
                                                               -------       -------       --------

   Gross profit                                                  7,702         8,084          8,340

   Research and development expense                              2,500         2,369          3,199
   Selling and administrative expenses                           4,829         5,207          6,686
   Loss on sale of financial systems business and other
   non-recurring charges(Notes 2 and 5)                              -           663            832
                                                               -------       -------       --------

   Operating income (loss)                                         373          (155)        (2,377)
                                                               -------       -------       --------
   Other income (expense)
   Interest income                                                  29            65             78
   Interest expense                                               (102)         (126)          (168)
   MEDASYS merger-related expenses (Note 3)                          -          (495)             -
   Other non-operating expenses (Note 5)                             -             -           (158)
   Other, net                                                       15            42            (42)
                                                               -------       -------       --------
                                                                   (58)         (514)          (290)
                                                               -------       -------       --------

   Income (loss) before income taxes                               315          (669)        (2,667)
   Provision (benefit) for income taxes (Note 10)                  126          (254)        (1,014)
                                                               -------       -------       --------

   Net income (loss)                                           $   189       $  (415)      $ (1,653)
                                                               =======       =======       ========
   Earnings per common and common equivalent share (Note 10):
   Basic and diluted
   income (loss) per share                                     $  0.05       $ (0.11)      $  (0.43)
                                                               =======       =======       ========

</TABLE>

The accompanying notes are an integral part of the consolidated financial
statements.

<PAGE>                                F-5

CITATION Computer Systems, Inc.
Consolidated Statement of Shareholders' Equity
(Thousands)

<TABLE>
                                                               Equity
                                                               Adjustment
                                  Common Stock                 From Foreign
                                  Par     Paid-In   Retained   Currency
                                 Value    Capital   Earnings   Translation    Total

<S>                              <C>      <C>       <C>            <C>        <C>
Balance, March 31, 1997          $ 380    $ 6,449   $  2,906       $   74     $ 9,809
  Sale of common stock
    pursuant to exercise of
    stock options and warrants       -          2          -            -           2
  Issuance of common stock
    to Directors (Note 1)            -         12          -            -          12
  Issuance of common stock
    for 401K company-matching
    contributions                    1         50          -            -          51
  Foreign currency translation
    adjustment                       -          -          -          (74)        (74)
  Net loss                           -          -     (1,653)           -      (1,653)
                                 -----    -------   --------       ------     -------

Balance, March 31, 1998            381      6,513      1,253            -       8,147
  Issuance of common stock
    to Directors (Note 1)            2         46          -            -          48
  Issuance of common stock
    for 401K company-matching
    contributions                    1         37          -            -          38
  Net loss                           -          -       (415)           -        (415)
                                 -----    -------   --------       ------     -------

Balance, March 31, 1999            384      6,596        838            -       7,818
  Issuance of common stock
    to Directors (Note 1)            2         34          -            -          36
  Issuance of common stock for
    401K company-matching
    contributions                    2         38          -            -          40
  Net income                         -          -        189            -         189
                                 -----    -------   --------       ------     -------

Balance March 31, 2000           $ 388    $ 6,668   $  1,027       $    -     $ 8,083
                                 =====    =======   ========       ======     =======

</TABLE>


The accompanying notes are an integral part of the consolidated financial
statements.

<PAGE>                             F-6

CITATION Computer Systems, Inc.
Consolidated Statement of Cash Flows
(Thousands)

<TABLE>

                                                                    Year Ended March 31,
                                                             2000          1999            1998

<S>                                                       <C>          <C>             <C>
Cash flows from operating activities:
   Net income (loss)                                      $   189      $   (415)       $ (1,653)
Adjustments to reconcile net income(loss)to net cash
    Provided by operating activities:
  Depreciation and amortization of property and equipment     410           590             657
  Amortization of software development costs                1,184         1,650           2,085
  Amortization of other assets                                103           180             181
  Deferred income taxes                                       256          (254)         (1,014)
  Non-cash write off of financial products software and
    other non-recurring charges                                 -           539             943
  Non-cash 401K matching contribution                          40            38              51
  Non-cash issuance of common stock to Directors               36            48              12
Changes in current assets and liabilities:
  Decrease (increase)in accounts receivable, net              946          (838)             64
  Decrease (increase) in inventories                           21            88             (19)
  Decrease (increase) in prepaid expenses and other assets    (54)         (370)          1,331
  Decrease in accounts payable                               (952)         (200)           (238)
  Increase (decrease) in customer deposits                    (87)         (177)             78
  Increase (decrease) in other accrued liabilities           (103)           16              (6)
  Increase (decrease) in deferred service revenues            (19)          143              92
Other                                                         128            88               -
                                                          -------       -------         -------

Net cash provided by operating activities                 $ 2,098       $ 1,126         $ 2,564
                                                          -------       -------         -------

</TABLE>

The accompanying notes are an integral part of the consolidated financial
statements.


<PAGE>                              F-7

CITATION Computer Systems, Inc.
Consolidated Statement of Cash Flows - continued
(Thousands)

<TABLE>

                                                                        Year ended March 31,
                                                          2000          1999           1998

<S>                                                     <C>           <C>           <C>
Cash flows from investing activities:
  Capital expenditures                                  $  (232)      $  (371)      $   (345)
  Software development costs                               (864)         (834)        (1,089)
  Purchase of C-RIS system                                    -          (250)             -
                                                        -------       -------       --------

    Net cash used in investing activities                (1,096)       (1,455)        (1,434)
                                                        -------       -------       --------
Cash flows from financing activities:
  Principal payments on long-term debt                     (911)         (421)        (1,149)
  Proceeds from long-term debt                                -           534              -
  Proceeds from sale of common stock pursuant
    to exercise of stock options and warrants                 -             -              2
                                                        -------       -------       --------

     Net cash provided (used) by financing activities      (911)          113         (1,147)
                                                        -------       -------       --------

Effect of exchange rate changes on cash                       -             -            (74)
                                                        -------       -------       --------

Net increase (decrease) in cash and cash equivalents         91          (216)           (91)
Cash and cash equivalents, beginning of year                204           420            511
                                                        -------       -------       --------

Cash and cash equivalents, end of year                   $  295        $  204        $   420
                                                        =======       =======       ========

</TABLE>

For  the years ended March 31, 2000, 1999, and 1998 the Company  paid
interest of $102, $126, and $168, respectively, and received  refunds
of income taxes of $0, $59, and $646, respectively.


The accompanying notes are an integral part of the consolidated
financial statements.

<PAGE>                             F-8

CITATION Computer Systems, Inc.
Notes to Consolidated Financial Statements
(Thousands  unless otherwise indicated, except shares and  per  share
amounts)

1.   Summary of Significant Accounting Policies
The  policies utilized by CITATION Computer Systems, Inc. ("Company")
in  the  preparation of the consolidated financial statements conform
to  United  States  generally  accepted  accounting  principles,  and
require management to make estimates and assumptions that affect  the
reported  amounts  of  assets and liabilities  at  the  date  of  the
financial  statements  and  the  reported  amounts  of  revenues  and
expenses  during the reporting period.  Actual amounts  could  differ
from these estimates.

The  significant  accounting policies followed  by  the  Company  are
described below:

Operations

CITATION designs, develops, markets and supports clinical information
systems  for  hospitals,  clinics, physicians'  groups  and  emerging
Integrated  Delivery  Networks  ("IDN's").   The  Company  offers   a
comprehensive  suite  of products designed using  open  client/server
architecture  that  meets  a broad range of the  information  systems
needs of the healthcare industry.

Inventories

Inventories are valued at the lower of cost, determined on the  first
in, first out basis, or market.

Property and Equipment

Property  and  equipment  is recorded at cost.   Major  renewals  and
betterments  are  capitalized  while  maintenance  and  repairs   are
expensed currently.  When property is sold or otherwise disposed  of,
the  related cost and accumulated depreciation are removed  from  the
respective accounts, and any gain or loss on disposition is  credited
or charged to income.

The  Company  provides for depreciation of property and equipment  by
charging against earnings amounts sufficient to amortize the cost  of
the  properties  over  the  estimated useful  lives  generally  using
straight  line methods.  The estimated useful life of the assets  are
as follows:

     Vehicles, furniture, fixtures and equipment .. 3 to 10 years
     Leasehold improvements ... Remaining life of the lease

Revenue Recognition

Clinical information system sales contracts are negotiated separately
and  generally  include  the  licensing  of  the  Company's  clinical
information system software, project-related services associated with
the  installation  of the systems and the sale of computer  hardware.
Clinical  information  system sales contracts are  noncancelable  and
provide  for a right of return only in the event the system fails  to
meet the performance criteria set forth in the contracts.

Revenue from the sale of computer systems is recognized upon shipment
to  the  customer.  Revenue related to the installation  of  computer
systems  is recognized as the work is performed.  Costs and  expenses
related  to  installation  of  the computer  equipment  and  software
system,  training  customer personnel, and provision  for  warranties
offered  are  recorded as cost of sales when the related  revenue  is
recognized.

Revenue  from the sale of additional hardware and additional software
is  recognized upon shipment.  Costs and expenses associated with the
sale  of  additional  hardware and software  are  recorded  when  the
related  revenue is recognized.  Revenue related to sales of  product
warranties  and  maintenance service contracts is recognized  ratably
over  the term of the contract period.  Sales returns are treated  as
reductions to net system sales and service revenues.

Cost of Sales

For  purposes  of  estimating the cost of sales  related  to  service
revenue,  the  Company includes all of its customer service  expenses
plus  an  allocation  of certain other overhead expenses  based  upon
estimates made by management.

<PAGE>                         F-9

Software Development Costs

Certain   costs   incurred  in  developing  software   products   are
capitalized  and  amortized on a product-by-product basis  using  the
greater  of the ratio that current gross revenues for a product  bear
to the current and anticipated future gross revenues for that product
or  the  straight-line method over the estimated three  to  five-year
economic  life  of  the  products.  The costs  consist  of  salaries,
computer  expenses and other overhead costs directly related  to  the
development  and/or  major enhancement of  software  products.   Such
costs  are  capitalized, to the extent they are  recoverable  through
future  sales, from the time the product's technological  feasibility
is  established  up  to  its  general release  to  customers.   Costs
incurred before or after this period are expensed as incurred.

Impairment of Assets

The  Company reviews long-lived assets to assess recoverability  from
future  operations  using  expected undiscounted  future  cash  flows
whenever  events and circumstances indicate that the carrying  values
may  not  be  recoverable.   Impairment  losses  are  recognized   in
operating  results when expected undiscounted future cash  flows  are
less than the carrying value of the asset.

Research and Development Costs

Research and development costs are charged to expense as incurred.

Income Taxes

The  Company utilizes the liability method of accounting  for  income
taxes.   Under  the  liability  method,  deferred  income  taxes  are
determined  based  on the difference between the financial  statement
and  tax  bases of assets and liabilities using enacted tax rates  in
effect in the years in which the differences are expected to reverse.
Such  temporary  differences result primarily  from  using  different
methods to accrue certain expenses and to calculate capitalization of
software  development costs for financial and tax reporting purposes.
Deferred  tax (benefit) expense represents the change in the deferred
tax asset or liability for the reporting period.

Earnings (Loss) Per Common and Common Equivalent Share

In  March  1997,  the  Financial Accounting  Standards  Board  issued
Statement  of  Financial Accounting Standards No. 128, "Earnings  per
Share"  ("FAS  128"), which requires public entities to present  both
basic  and  diluted earnings per share amounts on the face  of  their
financial  statements, replacing the former calculations  of  primary
and  fully diluted earnings per share.  Basic earnings per  share  is
based  on  the  weighted average number of outstanding common  shares
during  the  period  but does not consider dilution  for  potentially
dilutive  securities.  Diluted earnings per share  reflect  potential
dilutive  common  shares  subject to  stock  options.   The  dilutive
potential  common share arising from the effect of outstanding  stock
options  are  computed using the treasury stock method, if  dilutive.
The  Company  adopted  FAS 128 effective with the  beginning  of  its
fiscal  1998  third  quarter, and retroactively  restated  all  prior
years' earnings per share information.

Reconciliation  of the number of shares used in computing  basic  and
dilutive earnings (loss) per common and common equivalent share is as
follows:

<TABLE>

                                              Year ended March 31,
                               2000                  1999                 1998

<S>                       <C>                   <C>                  <C>
Basic                     3,858,303             3,823,361            3,806,536
Effect of dilutive
securities-stock options     30,997                     -                    -
                          ---------             ---------            ---------
Diluted                   3,889,300             3,823,361            3,806,536
                          =========             =========            =========

</TABLE>

Fair Value of Financial Instruments

For  purposes of financial reporting, the Company has determined that
the  fair  value of financial instruments approximate book  value  at
March 31, 2000, based on terms currently available to the Company  in
financial markets.

<PAGE>                          F-10
Cash and Cash Equivalents

Cash and cash equivalents include all highly liquid investments, such
as  money-market accounts with an original maturity of  3  months  or
less.

Principles of Consolidation

The  consolidated financial statements include the  accounts  of  the
Company   and   its   wholly-owned  subsidiaries.   All   significant
intercompany transactions and balances have been eliminated.

Directors' Fees

During  the  year  ended  March 31, 1995,  the  Company  adopted  the
Directors  Common Share Plan (Directors' Plan) whereby  certain  non-
employee  members of the Board of Directors (Directors)  may  receive
all or a portion of the Directors' fees in the form of Company common
stock  in lieu of cash.  During the years ended March 31, 2000, 1999,
and 1998, 18,000, 15,672, and 1,600 shares of common stock valued  at
approximately  $36, $48, and $12, respectively, were issued  to  such
Directors under the Directors Plan.

Comprehensive Income

Statement  of  Financial  Accounting Standards  No.  130,  "Reporting
Comprehensive  Income"  ("FAS 130"), establishes  standards  for  the
reporting and presentation of comprehensive income and its components
in   a   complete   set  of  general-purpose  financial   statements.
Comprehensive income represents net income (loss) plus certain  items
that  are  charged  directly to shareholders'  equity.   The  Company
adopted FAS 130 for the year ended March 31, 1999.  Given the sale of
the  Company's foreign operations in fiscal 1997, the Company has  no
other  comprehensive income items and the adoption of FAS 130 had  no
effect on the accompanying financial statement presentation.

New Accounting Standards

In  June  1998,  the  FASB issued Statement of  Financial  Accounting
Standards No. 133, "Accounting for Derivative Instruments and Hedging
Activities"   ("FAS  133").   FAS  133  established  accounting   and
reporting  standards  for  derivative  instruments  and  for  hedging
activities and requires recognition of all derivatives on the balance
sheet  measured at fair value.  FAS 133 is effective for  all  fiscal
quarters  of  all fiscal years beginning after June  15,  2000.   The
Company  is  continuing  to evaluate the provisions  of  FAS  133  to
determine its impact on the Company's financial position and  results
of  operations,  although the Company does not generally  enter  into
transactions involving derivative instruments.

In  December 1999, the Securities Exchange Commission ("SEC")  issued
Staff  Accounting Bulletin No. 101 ("SAB 101").  SAB 101 is effective
for  transactions  entered  into  in  fiscal  years  beginning  after
March   15,  2000.   SAB  101  provides  a  summary  of  the  general
application  of generally accepted accounting principles  to  revenue
recognition in the financial statements along with interpretations of
applying generally accepted accounting principles to selected revenue
recognition   issues.   The  Company  is  currently  evaluating   the
provisions  of SAB 101 to determine any impact on financial  position
and results of operations.

2.   Sale of Financial Software Line Of Business
In  June  1998,  the  Company  sold the financial  software  line  of
business, including its accounts receivable, patient billing, general
ledger,  accounts  payable, fixed assets, inventory control,  medical
records  abstracting  and registration software modules  to  Sterling
Systems based in Downey, Idaho.  This line of business accounted  for
approximately $1.8 million of revenue and contributed a  pretax  loss
of  $0.2  million in fiscal 1998. Revenues from this line of business
in  fiscal 1999 were $0.3 million through the date of its sale.   The
transaction resulted in an aggregate pretax loss of $0.7 million  and
an  after tax loss of approximately $0.4 million, or $0.11 per share.
The  loss  included the write-off of approximately  $0.5  million  of
capitalized software development costs associated with this  software
and  an  additional  charge  of $0.6 million  based  on  management's
estimates  of  the  collectibility  of  certain  accounts  receivable
related to its former financial software line of business, which were
retained  by  the Company.  Approximately $0.4 million of  the  sales
price  for  this  line  of business is reflected  in  other  accounts
receivable on the March 31, 2000 Consolidated Balance Sheet;  payment
thereof is expected in fiscal year 2001.

<PAGE>                        F-11

3.   Termination of Possible Business Combination
On  September  15, 1998, the Company, MEDASYS Digital Systems,  S.A.,
certain  shareholders  of  the Company and  certain  shareholders  of
MEDASYS  entered  into an Agreement and Plan of  Reorganization  (the
"Reorganization Agreement").  On December 9, 1998, the Reorganization
Agreement  was  terminated by the parties.   However,  the  companies
continued  to  explore other strategic opportunities  and  entered  a
joint marketing agreement related to clinical information systems  in
the  fourth  quarter of fiscal 1999.  During the  fourth  quarter  of
fiscal  1999, a non-operating charge of $495 was recorded related  to
costs (primarily legal, accounting and investment advisory in nature)
associated with the MEDASYS business combination discussions.

4.   Acquired C-RIS Radiology Information System Software
During  the  fourth  quarter of fiscal 1999, the  Company  agreed  to
purchase  its C-RIS radiology information system software from  Irish
Medical  Systems ("IMS") for $250.  The Company previously  held  the
exclusive  North  American distribution rights for C-RIS,  which  was
developed by IMS under CITATION's specifications and first introduced
to  the  market  in  1997.  The Company financed this  purchase  with
proceeds from bank debt.

5.   Other Non-recurring Charges
During  the fourth quarter of fiscal 1998, the Company recorded  non-
recurring,  pretax  charges of $832 for costs  primarily  related  to
customer  matters  regarding  discontinued  products  and  $158   for
non-operating  costs related to the strategic review of  alternatives
following an unsolicited expression of interest in the Company.  Cash
payments  during  fiscal  1998  with respect  to  such  charges  were
approximately   $60.    Remaining   additional   payments    totaling
approximately $62 were paid in fiscal 1999.

6.   Long-term Accounts Receivable
The Company has provided extended payment terms for software sold  to
its  distributor  in  Singapore.  Collection  of  the  receivable  is
ultimately  dependent on the distributor's cash flows.   The  Company
believes  that this receivable, which approximated $1.4  million  and
$1.6  million at March 31, 2000 and March 31, 1999 respectively,  and
is classified as long-term, is fully collectible.

7.   Concentration of Credit Risk
The   Company  generates  revenue  primarily  through  sales  to  the
healthcare  industry located throughout the United  States.   Due  to
this  concentration, substantially all receivables at March 31,  2000
and 1999 are from healthcare institutions in the United States, and a
healthcare  information systems integrator based in Singapore,  which
may be similarly affected by changes in economic, regulatory or other
conditions.

The  Company performs ongoing credit evaluations of its customers and
generally   does  not  require  collateral.   The  Company  maintains
reserves  for  potential credit losses and historically  such  losses
have been within management's expectations.

8.   Inventories
Inventories consist of the following:

<TABLE>

                                              March 31,
                                         2000          1999

<S>                                     <C>           <C>
Hardware and third party software       $ 129         $ 143
Field service equipment                   198           205
                                        -----         -----
                                        $ 327         $ 348
                                        =====         =====

</TABLE>

<PAGE>                          F-12

9.   Long-term Debt
Long-term debt consists of the following:

<TABLE>

                                                                              March 31,
                                                                          2000        1999

<S>                                                                      <C>        <C>
Bank notes payable due in monthly payments of principal and interest
  through March, 2002; interest payable at 8% to 8.5%                    $  319     $  563

   Borrowings under bank line of credit, interest payable at prime
     (9.0% at March 31, 2000)                                               500      1,167
                                                                         ------     ------
Total debt                                                                  819      1,730
Less - current portion                                                      197        239
                                                                         ------     ------

Total long-term debt                                                     $  622     $1,491
                                                                         ======     ======

</TABLE>

The  line  of credit with a bank allows the Company to borrow  up  to
$4,000 through June 1, 2001.  At March 31, 2000, $3,500 was available
under the line of credit.

The  line of credit and the notes payable to banks are secured by the
Company's  accounts  receivable, inventory,  equipment,  and  general
intangible  assets.  The respective agreements require  that  certain
minimum  net  worth and leverage ratio requirements be maintained  by
the  Company.   The Company was in compliance with these requirements
or has obtained waivers at March 31, 2000.

The aggregate maturities of long-term debt are as follows:

<TABLE>
                          Year Ended
                           March 31,

                     <S>             <C>
                     2001             197
                     2002             622
                                     ----
                                     $819
                                     ====

</TABLE>

10.  Income Taxes
The  components of the provision (benefit) for income  taxes  are  as
follows:

<TABLE>

                                    Year ended March 31,
                           2000            1999              1998

<S>                      <C>             <C>              <C>
Current:
     Federal             $    -          $    -           $     -
     State                    -               -                 -
                         ------          ------           -------
                              -               -                 -
                         ------          ------           -------
Deferred:
     Federal                 94           (217)             (857)
     State                   32            (37)             (157)
                         ------          ------           -------
                            126           (254)           (1,014)
                         ------          ------           -------
                         $  126          $(254)          $(1,014)
                         ======          ======           =======

</TABLE>

The  provision  (benefit) for income taxes differs  from  the  amount
computed  using  the  statutory federal  income  tax  rate  (34%)  as
follows:

<TABLE>
                                              Year ended March 31,
                                      2000              1999           1998

<S>                                  <C>             <C>           <C>
Income tax provision (benefit)
     at the statutory rate           $ 107           $ (227)       $  (907)
Increases:
    State income taxes, net             21              (24)          (103)
     Other, net                         (2)              (3)            (4)
                                     -----           -------       --------

                                     $ 126           $ (254)       $(1,014)
                                     =====           =======       ========

</TABLE>

<PAGE>                         F-13

Deferred  tax assets and liabilities at March 31, 2000 and 1999,  are
comprised of the following temporary differences:

<TABLE>
                                                               March 31,
                                                         2000           1999
<S>                                                      <C>            <C>
Current deferred tax assets (liabilities):
     Accrued liabilities                                 $  46          $ 71
     Allowance for doubtful accounts                        74            85
     Other, net                                            (40)          (14)
                                                         -----          ----
     Net current deferred tax asset                      $  80          $142
                                                         =====          ====

</TABLE>

<TABLE>
                                                               March 31,
                                                          2000          1999

<S>                                                   <C>            <C>
Long-term deferred tax assets (liabilities):
   Capitalized software development costs             $  (259)       $  (387)
   Depreciation                                            41             85
   State taxes                                            (42)           (53)
   Tax credit carry forward                                90             90
   Net operating loss carry forward                     1,080          1,369
                                                      -------        -------
Net long-term deferred tax asset                      $   910        $ 1,104
                                                      =======        =======

</TABLE>

At  March  31,  2000,  the  Company had Federal  net  operating  loss
carryforwards of approximately $2,735, which expire between 2012  and
2013.   Company  management has determined  that  based  on  expected
future  operating plans and tax planning strategies available to  the
Company, the net operating loss carryforwards at March 31, 2000  will
be   utilized  to  offset  future  taxes.   Therefore,  no  valuation
allowance  related to the net operating loss carryforwards  has  been
recorded at March 31, 2000.

11.  Stock Options and Warrants
The  Company  has  an  Employee Incentive  Stock  Option  Plan  which
provides for the issuance of up to 348,347 stock options to executive
officers or other key employees of the Company.

The  Company's incentive stock option plan allows participation, with
certain  restrictions, by all full-time employees with at  least  one
year  of service.  Options granted allow employees to purchase shares
of the Company's common stock at prices not less than the fair market
value of the stock at the date of the grant.  Options which have been
granted under the plan are exercisable during the employment  of  the
grantee  at  specified  time intervals.  Outstanding  options  expire
between 2004 and 2009.

In  addition,  the Company in August 1999 approved a Directors  Stock
Option  Plan  as amended, which provides for the issuance  of  up  to
400,000 stock options to members of the Company's Board of Directors.
Stock  options to purchase up to 60,000 shares have been  granted  to
directors.

<PAGE>                             F-14

Stock option transactions (number of shares) are summarized below:

<TABLE>
                                                  Year Ended March 31,
                                               2000       1999       1998

<S>                                         <C>        <C>        <C>
Shares under option,
    beginning of period                     330,333    346,333    300,333
Stock options granted at an exercise price
    of $1.00                                      -      9,000          -
Stock options granted at an exercise price
    of $3.0625                                    -      1,000          -
Stock options granted at an exercise price
    of $1.875                                25,000          -          -
Stock options granted at an exercise price
    of $7.00                                      -          -      7,000
Stock options forfeited                      (3,500)   (15,000)    (1,500)
Non-qualified stock options granted at
    an exercise price of $1.625             100,000          -          -
Non-qualified stock options granted at
    an exercise price of $1.938              60,000          -          -
Non-qualified stock options granted at
    an exercise price of $7.24 to $9.125          -          -     41,000
Non-qualified stock options forfeited       (31,333)   (11,000)         -
Stock options exercised at $4.50                  -          -       (500)
                                           --------   --------    -------
Shares under option, end of period          480,500    330,333    346,333
                                           ========   ========    =======

</TABLE>


The following table summarizes information for options currently
outstanding at March 31, 2000:

<TABLE>

                                                Weighted Average
 Exercise                          Number           Remaining
   Price                         Outstanding    Contractual Life
   -----                         -----------    ----------------

   <S>                             <C>            <C>
   $1.00 - $3.0625                 195,000        10    years
    4.50  - 5.00                   168,500         5
    6.13  - 7.00                    25,000         7
    8.88  - 9.13                    12,000         8
           14.25                    80,000         6
                                   -------
                                   480,500
                                   =======

</TABLE>

The  Company  accounts for employee stock options in accordance  with
Accounting  Principles  Board Opinion No. 25  "Accounting  for  Stock
Issued  to  Employees" (APB 25).  Under APB 25, the "intrinsic  value
based method" specifies that no compensation expense is recognized if
employee stock options are granted with an exercise price equal to or
higher  than the market value of the stock price on the date  of  the
grant.

At   March  31,  2000,  options  to  purchase  381,898  shares   were
exercisable.  During the years ended March 31, 2001 and 2002, options
to  purchase  an  additional 41,936 and 28,335 shares,  respectively,
will  become  exercisable.  Options to purchase 220,681  shares  were
available  for grant under the 1992 Employee Incentive  Stock  Option
Plan at March 31, 2000.

In  October  1995,  the Financial Accounting Standards  Board  issued
Statement  of Financial Accounting Standards No. 123 "Accounting  for
Stock-Based  Compensation"  ("FAS  123").   FAS  123  prescribes  the
recognition  of  compensation expense based  on  the  fair  value  of
options  or  stock  awards  determined on  the  date  of  the  grant.
However, FAS 123 allows companies to continue to apply the "intrinsic
value  based  method" set forth in APB 25 for employee  stock  option
grants.   Had  compensation  costs for the Company's  employee  stock
option plan been determined based on the fair value of the options on
the  grant  dates consistent with the methodology prescribed  by  FAS
123,  the Company's net income (loss) and net income (loss) per share
would have decreased (increased) as shown below.  In accordance  with
the adoption methodology prescribed by FAS 123, the pro forma results
shown below reflect only the impact of employee stock options

<PAGE>                         F-15

granted  during  the  years  ended  March  31, 2000 and 1999. Because
future employee  stock  options may be granted, the  pro forma impact
for fiscal 2000 and fiscal 1999 is not necessarily indicative of  the
impact in future years.

<TABLE>
                                                  2000           1999

<S>                                              <C>          <C>
Net income (loss)
     As reported                                 $ 189        $ (415)
     Pro forma                                      56          (426)
Income (loss) per share
     As reported                                 $0.05        $(0.11)
     Pro forma                                    0.01         (0.11)

</TABLE>

The  fair  value of the options granted is estimated on the  date  of
grant using the Black-Scholes multiple option-pricing model with  the
following weighted average assumptions:

<TABLE>

                                                 2000            1999

<S>                                       <C>             <C>
Risk-free interest rate                   5.8% - 6.0%     4.4% - 5.3%
Expected volatility                               80%             77%
Estimated lives of options (in years)             5.0             5.0
Expected dividend yield                            0%              0%

</TABLE>

The  weighted average fair value of options granted during the fiscal
years   ended  March  31,  2000  and  1999  was  $1.20   and   $1.89,
respectively.

12.  Profit and Savings Incentive Plans
CITATION  maintains  a Retirement Savings Plan  for  the  benefit  of
substantially  all  CITATION employees.  Employee  contributions  may
range from one percent to fifteen percent of compensation, subject to
limits  prescribed by the Internal Revenue Code.  CITATION matches  a
discretionary  percentage of an employee's contribution,  up  to  six
percent of the employee's compensation.

For  the  plan  year ended December 31, 1999 and 1998,  the  matching
contribution  was twenty-five percent of employee contributions,  and
was  paid in the form of Company stock.  It is the Company's  current
intention to continue to make the matching contribution in  the  form
of  Company  stock.   Employees are immediately one  hundred  percent
vested  as  to employee contributions and are vested as  to  employer
contributions  at the rate of twenty percent per year,  beginning  in
the second year of service.

For  the  years  ended March 31, 2000, 1999, and  1998,  the  Company
recorded  expense  of approximately $37, $38, and $51,  respectively,
relating to this plan.

13.  Leases
The  Company  leases its office and warehouse facilities and  certain
office  equipment.  The lease terms are generally  for  two  to  five
years.   Rental  expense under operating leases for the  years  ended
March  31,  2000, 1999, and 1998, was approximately $555,  $549,  and
$551, respectively.

Future  minimum lease payments under non-cancelable operating  leases
are as follows:

<TABLE>

     Year Ended March 31,

            <S>                                  <C>
            2001                                 $   517
            2002                                     516
            2003                                     516
            2004                                     516
            2005                                     159
            Thereafter                                 7
                                                 -------
                                                 $ 2,231
                                                 =======

</TABLE>

14.  Commitments and Contingencies
The  Company from time to time is a party to certain lawsuits in  the
ordinary course of business.  Management does not expect the  outcome
of  any litigation to have a material adverse effect on the Company's
financial position, results of operations, or cash flows.

<PAGE>                           F-16

15.  Quarterly Financial Data (Unaudited)

<TABLE>                                                          Basic and diluted
                                                                  earnings (loss)
                  Net sales     Gross profit   Net income (loss)    per share2
                2000     1999   2000    1999   2000     1999       2000     1999

<S>          <C>      <C>      <C>     <C>     <C>    <C>          <C>    <C>
1st quarter  $ 4,328  $ 3,414  $2,128  $1,701   $144  $ (130)1     $ .04  $(.03)1
2nd quarter    4,322    4,106   1,995   2,290    101     172         .03    .05
3rd quarter    3,709    3,976   2,090   2,145     66     194         .02    .05
4th quarter    2,637    4,632   1,489   1,948   (122)   (651)1      (.03)  (.17)1
             -------  -------  ------  ------  -----   ------
Total        $14,996  $16,128  $7,702  $8,084   $189   $(415)
             =======  =======  ======  ======  =====   ======

</TABLE>

(1)   See  Notes 2 and 3 regarding the sale of the financial products
      and termination of proposed business combination  in  the first
      and fourth quarters of fiscal 1999.
(2)   The annual earnings per share amount does not agree to the  sum
      of  the quarters as a result of changes in the market prices of
      the Company's common stock and the application of the  treasury
      stock  method.

16.  Subsequent Event
In  May  2000, the Company announced that it had entered a definitive
agreement   for  a  business  combination  with  Cerner   Corporation
("Cerner").  Under terms of the agreement, CITATION shareholders will
receive 0.153 shares of Cerner stock and $0.51 in cash for each share
of  CITATION, resulting in the issuance of 598,000 shares  of  Cerner
stock for ninety percent of CITATION and payment of approximately  $2
million   for  the  remaining  ten  percent  of  the  Company.    The
transaction,  which  as  to the stock portion  will  be  tax-free  to
CITATION  shareholders and which will be accounted for as a  purchase
by  Cerner,  is expected to close in the third quarter this  calendar
year pending CITATION shareholder approval and regulatory approval.

<PAGE>                       F-17


                                                    APPENDIX A


                 AGREEMENT AND PLAN OF MERGER

                           dated as of

                          May 15, 2000

                              among

                       CERNER CORPORATION,

               CERNER PERFORMANCE LOGISTICS, INC.

                               and

                 CITATION COMPUTER SYSTEMS, INC.

<PAGE>

ARTICLE I  DEFINITIONS..................................................A-1

ARTICLE II  THE MERGER..................................................A-2
     Section 2.1........................................................A-2
     Section 2.2.Dissenting Shares......................................A-5
     Section 2.3.Surrender of Certificates..............................A-6
     Section 2.4.Affiliates.............................................A-7

ARTICLE III  REPRESENTATIONS AND WARRANTIES OF CERNER...................A-8
     Section 3.1.Corporate Existence and Power..........................A-8
     Section 3.2.Corporate Authorization................................A-8
     Section 3.3.Governmental Authorization.............................A-8
     Section 3.4.Non-Contravention......................................A-8
     Section 3.5.Cerner SEC Documents...................................A-9
     Section 3.6.Information to be Supplied.............................A-9
     Section 3.7.Absence of Certain Changes............................A-10
     Section 3.8.Litigation............................................A-10
     Section 3.9.Finders' Fees.........................................A-10
     Section 3.10.Capitalization.......................................A-10
     Section 3.11.Financial Statements; No Material Undisclosed
          Liabilities..................................................A-11
     Section 3.12.Taxes................................................A-11

ARTICLE IV  REPRESENTATIONS AND WARRANTIES OF CITATION.................A-12
     Section 4.1.Corporate Existence and Power.........................A-12
     Section 4.2.Corporate Authorization...............................A-12
     Section 4.3.Governmental Authorization............................A-12
     Section 4.4.Non-Contravention.....................................A-12
     Section 4.5.Capitalization........................................A-13
     Section 4.6.Subsidiaries..........................................A-14
     Section 4.7.Financial Statements; No Material Undisclosed
          Liabilities..................................................A-14
     Section 4.8.CITATION SEC Documents................................A-14
     Section 4.9.Information to be Supplied............................A-15
     Section 4.10.Absence of Certain Changes...........................A-15
     Section 4.11.Litigation...........................................A-16
     Section 4.12.Taxes................................................A-16
     Section 4.13.Employee Benefits....................................A-17
     Section 4.14.Compliance with Laws; Licenses, Permits and
          Registrations................................................A-18
     Section 4.15.Title to Properties..................................A-19
     Section 4.16.Intellectual Property................................A-19
     Section 4.17.Environmental Matters................................A-20
     Section 4.18.Finders' Fees; Opinions of Financial Advisor.........A-20
     Section 4.19.Required Vote and Waiver; Board Approval.............A-21
     Section 4.20.State Takeover Statutes..............................A-21
     Section 4.21.Tax Treatment........................................A-21
     Section 4.22.Certain Agreements...................................A-21
     Section 4.23.Employment Agreements................................A-22
     Section 4.24.Transactions With Directors, Officers and Affiliates.A-22
     Section 4.25.Material Contracts...................................A-22
     Section 4.26.Certain Business Practices...........................A-23
     Section 4.27.Insurance............................................A-23

<PAGE>                            A-i

                             Table of Contents
                             -----------------
                               (continued)



ARTICLE V  REPRESENTATIONS AND WARRANTIES OF MERGER SUB................A-24
     Section 5.1.Organization..........................................A-24
     Section 5.2.Corporate Authorization...............................A-24
     Section 5.3.Non-Contravention.....................................A-24
     Section 5.4.No Business Activities................................A-24
     Section 5.5.Taxes.................................................A-24

ARTICLE VI  COVENANTS OF CITATION......................................A-24
     Section 6.1.CITATION Interim Operations...........................A-24
     Section 6.2.Acquisition Proposals; Board Recommendation...........A-27
     Section 6.3.Employment Agreements.................................A-29
     Section 6.4.Shareholder Agreement.................................A-29

ARTICLE VII  COVENANTS OF CITATION AND CERNER..........................A-29
     Section 7.1.Reasonable Best Efforts...............................A-29
     Section 7.2.Certain Filings; Cooperation in Receipt of Consents;
          Listing......................................................A-29
     Section 7.3.Public Announcements..................................A-31
     Section 7.4.Access to Information; Notification of Certain
          Matters......................................................A-31
     Section 7.5.Further Assurances....................................A-32
     Section 7.6.Tax Treatment.........................................A-32
     Section 7.7.Affiliates............................................A-33
     Section 7.8.Benefit Matters.......................................A-33
     Section 7.9.Antitrust Matters.....................................A-33
     Section 7.10.Exemption From Liability Under Section 16(b).........A-33
     Section 7.11.Indemnification and Insurance........................A-34

ARTICLE VIII  CONDITIONS TO THE MERGER.................................A-35
     Section 8.1.Conditions to the Obligations of Each Party...........A-35
     Section 8.2.Conditions to the Obligations of Cerner and Merger
          Sub..........................................................A-36
     Section 8.3.Conditions to the Obligations of CITATION.............A-37

ARTICLE IX  TERMINATION................................................A-38
     Section 9.1.Termination...........................................A-38
     Section 9.2.Effect of Termination.................................A-39
     Section 9.3.Termination Fees; Other Fees..........................A-40

ARTICLE X  MISCELLANEOUS...............................................A-40
     Section 10.1.Notices..............................................A-40
     Section 10.2.Amendments; No Waivers...............................A-41
     Section 10.3.Assignment...........................................A-41
     Section 10.4.Governing Law........................................A-42
     Section 10.5.Counterparts; Effectiveness..........................A-42
     Section 10.6.No Third Party Beneficiaries.........................A-42
     Section 10.7.Interpretation.......................................A-42
     Section 10.8.Enforcement..........................................A-42
     Section 10.9.Entire Agreement.....................................A-42
     Section 10.10. Severability.......................................A-42


<PAGE>                            A-ii

APPENDICES

Appendix I -         Definitions

EXHIBITS

Exhibit A -          Certificate of Merger
Exhibit B -          Articles of Merger
Exhibit C -          Representation Letter from Cerner
Exhibit D -          Representation Letter from CITATION
Exhibit E -          Affiliate Agreement
Exhibit F -          List of Employees
Exhibit G -          Form of Employment Agreement
Exhibit H -          Form of Legal Opinion - CITATION
Exhibit I -          Form of Legal Opinion - Cerner
Exhibit J -          Confidentiality Agreement

<PAGE>                            A-iii

                  AGREEMENT AND PLAN OF MERGER

     AGREEMENT AND PLAN OF MERGER, dated as of May 15, 2000 (the
"Agreement"), by and among Cerner Corporation, a Delaware
corporation ("Cerner"), Cerner Performance Logistics, Inc., a
Delaware corporation and a wholly-owned subsidiary of Cerner
("Merger Sub"), and CITATION Computer Systems, Inc., a Missouri
corporation ("CITATION").

                            RECITALS:

     WHEREAS, the respective Boards of Directors of Cerner,
CITATION and Merger Sub have determined that the merger of
CITATION with and into Merger Sub (the "Merger"), upon the terms
and subject to the conditions set forth in this Agreement, would
be fair and in the best interests of their respective
stockholders, and such Boards of Directors have approved such
Merger, pursuant to which each issued and outstanding share of
common stock, par value $.10 per share ("Common Stock"), of
CITATION (the "Shares") (other than (a) Shares owned, directly or
indirectly, by Cerner or any Subsidiary of Cerner and
(b) dissenting shares) will be converted into the right to
receive cash and shares of Cerner Common Stock as provided
herein; and

     WHEREAS, the Merger and this Agreement require the
affirmative vote, in accordance with applicable law and the
Articles of Incorporation and By-laws of CITATION, of holders of
at least two-thirds of the outstanding Shares entitled to vote
thereon for the approval thereof (the "CITATION Shareholder
Approval"); and

     WHEREAS, Cerner is unwilling to enter into this Agreement
unless, contemporaneously with the execution and delivery of this
Agreement, certain directors and executive officers of CITATION
who are shareholders of CITATION enter into an agreement (the
"Shareholder Agreement") granting to Cerner irrevocable proxies
to vote all Shares beneficially owned by such shareholders "For"
the merger in connection with the CITATION Shareholder Approval
and an option to purchase all Shares beneficially owned by such
shareholders under certain circumstances; and

     WHEREAS, Cerner, CITATION and Merger Sub desire to make
certain representations, warranties, covenants and agreements in
connection with the Merger and also to prescribe various
conditions to the Merger.

     NOW, THEREFORE, in consideration of the representations,
warranties, covenants and agreements contained in this Agreement,
the parties agree as follows:

                            ARTICLE I

                           DEFINITIONS

     For purposes of this Agreement, the capitalized terms used
in this Agreement shall have the meanings specified or referred
to in Appendix I hereto which is incorporated herein by
reference.

<PAGE>

                           ARTICLE II

                           THE MERGER

     Section 2.1.

          (a)  The Merger.
               ----------  Upon the terms and subject to the conditions of
     this Agreement and in accordance with the General Corporation Law
     of the State of Delaware (the "Delaware Law") and The General and
     Business Corporation Law of Missouri (the "Missouri Law"), at the
     Effective Time CITATION shall be merged with and into Merger Sub.
     As a result of the Merger, the separate corporate existence of
     CITATION shall cease and Merger Sub shall continue as the
     surviving corporation of the Merger (the "Surviving
     Corporation").

<PAGE>                          A-1

          (b)  Effective Time.
               --------------  As soon as practicable after the Closing of
	the Merger, (i) the Certificate of Merger for the Merger
	("Certificate of Merger"), in substantially the form attached
	hereto as Exhibit A, prepared and executed in accordance with the
	relevant provisions of the Delaware Law, shall be filed with the
	Secretary of State of Delaware and (ii) the Articles of Merger
	for the Merger ("Articles of Merger") in substantially the form
	attached hereto as Exhibit B, prepared and executed in accordance
	with the relevant provisions of the Missouri Law shall be filed
	with the Secretary of State of Missouri.  The parties hereto
	agree to take all such further actions as may be required by law
	to make the Merger effective.  The Merger shall become effective
	in accordance with the terms of this Agreement, the Certificate
	of Merger and the Articles of Merger at the time and date
	contemplated therein (such time and date being referred to herein
	as the "Effective Time").

          (c)  The Closing.
               -----------  The Closing of the Merger and transactions
	contemplated by this Agreement will take place at 10:00 a.m. on a
	date mutually agreed upon by the parties hereto, which shall be
	no later than the third Business Day following the date on which
	all of the conditions to the obligations of the parties hereunder
	set forth in Article VIII hereof have been satisfied or waived.
	The Closing shall take place at the offices of Stinson, Mag &
	Fizzell, P.C., at 1201 Walnut Street, Suite 2800, Kansas City,
	Missouri, or such other place as may be mutually agreed upon by
	the parties hereto.

          (d)  Effects of the Merger.
               ---------------------  At and after the Effective Time, the
	Merger will have the effects set forth in the Delaware Law and
	the Missouri Law.  Without limiting the generality of the
	foregoing, and subject thereto, at the Effective Time all the
	property, rights, privileges, powers and franchises of Merger Sub
	and CITATION shall be vested in the Surviving Corporation, and
	all debts, liabilities and duties of Merger Sub and CITATION
	shall become the debts, liabilities and duties of the Surviving
	Corporation.  In addition, the Merger shall have the following
	effects:
               (i)  Certificate of Incorporation.
                    ----------------------------  The Certificate of
          Incorporation of Merger Sub as in effect immediately prior to the
          Effective Time shall be the Certificate of Incorporation of the
          Surviving Corporation; provided that Article First thereof shall
          be amended, effective as of the Effective Time, to read in its
          entirety as follows:  The name of the corporation is "Cerner
          CITATION, Inc."

              (ii) Bylaws.
                   ------  The Bylaws of Merger Sub as in effect immediately
          prior to the Effective Time shall be the Bylaws of the Surviving
          Corporation.

             (iii) Board of Directors.
                    ------------------  The directors of Merger Sub at the
          Effective Time shall be the initial directors of the Surviving
          Corporation, until the earlier of their resignation or removal or
          until their respective successors are duly elected and qualified,
          as the case may be.

             (iv) Officers.
                  --------  The officers of Merger Sub at the Effective Time
          shall be the initial officers of the Surviving Corporation, until
          the earlier of their resignation or removal or until their
          respective successors are duly elected or appointed and
          qualified, as the case may be.

          (e)  Effect on Capital Stock.
               -----------------------  At the Effective Time, by virtue
     of the Merger and without any action on the part of the parties
     hereto or their respective stockholders:

          	   (i)  Common Stock.
                    ------------  With respect to each holder of record of
          Common Stock outstanding immediately prior to the Effective Time
          (except for persons who object to the Merger and comply with all
          provisions of Section 351.455 of the Missouri Law concerning the
          right of such holders to dissent from the Merger and demand fair
          value for their shares), (A) 90% of the shares of CITATION Common
          Stock held by such holder shall be converted into that number of
          shares of Cerner Common Stock determined by multiplying the
          number of such shares of CITATION Common Stock times the Exchange
          Ratio (together with any cash in lieu of fractional shares of
          Cerner Common Stock to be paid pursuant to Section 2.1(e)(iv)),
          and (B) 10% of the shares of CITATION Common Stock held by such
          holder shall be converted into the right to receive $5.10 in cash
          per share of CITATION Common Stock (collectively, the "Merger
          Consideration").

<PAGE>                             A-2

          	  (ii) CITATION Stock held by Cerner, Merger Sub and CITATION.
                   ------------------------------------------------------
          Each share of Common Stock held by CITATION as treasury stock or
          owned by Cerner, Merger Sub or any Cerner or CITATION
          Subsidiaries immediately prior to the Effective Time shall be
          cancelled without payment of any consideration therefor and shall
          cease to exist.

          	 (iii) Merger Sub Common Stock.
                   -----------------------  Each share of common stock of
          Merger Sub outstanding and each share held in treasury
          immediately prior to the Effective Time shall remain outstanding
          and be unaffected by the Merger.

         	  (iv) Fractional Shares.
                   -----------------  No fraction of a share of Cerner Common
         Stock shall be issued in connection with the conversion of Common
         Stock in the Merger and the distribution of Cerner Common Stock
         in respect thereof, but in lieu of such fraction, the Exchange
         Agent shall make a cash payment (without interest and subject to
         the payment of any applicable withholding Taxes) equal to the
         same fraction of the market value of a full share of Cerner
         Common Stock, computed on the basis of the Average Cerner Stock
         Price determined as of the Closing Date.

         (f)  Stock Options and Other Stock Compensation.
              ------------------------------------------

               (i)  On or prior to the Effective Time, CITATION will take all
          action necessary such that each stock option or other stock
          related right or other form of stock related incentive or
          deferred compensation that was granted pursuant to the CITATION
          Employee Plans (other than CITATION's 401(k) Plan, which will
          receive the consideration set forth in Section 2.1(e)(i)) (as
          defined in Section 4.13(a)) prior to the Effective Time and which
          remains outstanding immediately prior to the Effective Time
          (collectively, the "Stock Rights") shall cease to represent a
          right with respect to shares of Common Stock and shall be
          converted, at the Effective Time, into a right, on the same terms
          and conditions as were applicable under such Stock Right (but
          taking into account any changes thereto (except that there shall
          be no acceleration in the vesting or exercisability of such
          option, right or incentive compensation by reason of this
          Agreement, the Merger or the other matters contemplated by this
          Agreement other than existing agreements which by their terms
          provide for acceleration, which agreements are set forth on
          Schedule 2.1(f) indicating the optionees thereof), provided for
          in the CITATION Employee Plans or in the terms of such right by
          reason of this Agreement or the transactions contemplated
          hereby), with respect to that number of shares of Cerner Common
          Stock determined by multiplying the number of shares of Common
          Stock subject to such Stock Right, times the Exchange Ratio,
          rounded, if necessary, to the nearest whole share of Cerner
          Common Stock, at (in the case of a stock option or stock
          appreciation right) a price per share (rounded to the nearest one-
          hundredth of a cent) determined by dividing the per-share
          exercise price specified in such stock option or stock
          appreciation right, as applicable, by the Exchange Ratio;
          provided, however, that in the case of any stock option to which
          Section 421 of the Code applies by reason of its qualification
          under Section 422 of the Code, the option price, the number of
          shares subject to such option and the terms and conditions of
          exercise of such option shall be determined in a manner
          consistent with the requirements of Section 424(a) of the Code.

          	  (ii) As soon as practicable after the Effective Time, the
          Surviving Corporation shall deliver to the holders of Stock
          Rights appropriate notices setting forth such holders' rights
          pursuant to the CITATION Employee Plans (except that there shall
          be no acceleration in the vesting or exercisability of such
          option, right or incentive compensation by reason of this
          Agreement, the Merger or the other matters contemplated by this
          Agreement, other than pursuant to those agreements set forth on
          Schedule 2.1(f)) and the agreements evidencing the grants of such
          Stock Rights shall continue in effect on the same terms and
          conditions (subject to the adjustments required by this Section
          2.1(f)(ii) after giving effect to the Merger and the terms of the
          CITATION Employee Plans (except that there shall be no
          acceleration in the vesting or exercisability of such option,
          right or incentive compensation by reason of this Agreement, the
          Merger or the other matters contemplated by this Agreement other
          than existing agreements which by their terms provide for
          acceleration)).  To the extent permitted by law, Cerner and the
          Surviving Corporation shall comply with the terms of the CITATION
          Employee Plans and shall take such reasonable

<PAGE>                                 A-3

          steps as are necessary or required by, and subject to the
          provisions of, such CITATION Employee Plans, to have the stock
          options which qualified as incentive stock options prior to the
          Effective Time continue to qualify as incentive stock options of
          Cerner after the Effective Time.

          	 (iii) Cerner shall take all corporate action necessary to
          reserve for issuance a sufficient number of shares of Cerner
          Common Stock for delivery upon exercise of Stock Rights in
          accordance with this Section 2.1(f).  Promptly after the
          Effective Time, Cerner shall file a registration statement(s) on
          Form S-8 with respect to the shares of Cerner Common Stock
          subject to such stock options or other stock related rights or
          other forms of stock related incentive or deferred compensation,
          and shall use commercially reasonable efforts to maintain the
          effectiveness of such registration statement or registration
          statements (and maintain the current status of the prospectus or
          prospectuses contained therein) for so long as such stock options
          or other stock related rights or other forms of stock related
          incentive or deferred compensation remain outstanding.  With
          respect to those individuals who subsequent to the Merger will be
          subject to the reporting requirements under Section 16(a) of the
          Exchange Act, where applicable, Cerner shall administer the
          CITATION Employee Plans in a manner consistent with the
          exemptions provided by Rule 16b-3 promulgated under the Exchange
          Act.

          (g)  Certain Adjustments.
               -------------------  If, between the date of this Agreement
     and the Effective Time, the outstanding Common Stock or Cerner
     Common Stock shall have been changed into a different number of
     shares or different class by reason of any reclassification,
     recapitalization, stock split, reverse stock split, combination
     or exchange of shares, or a stock dividend or dividend payable in
     any other securities shall be declared with a record date within
     such period, or any similar event shall have occurred, the Merger
     Consideration and Exchange Ratio shall each be appropriately
     adjusted to provide to the holders of Common Stock or
     participants in the CITATION Employee Plans the same economic
     effect as contemplated by this Agreement prior to such event.

     Section 2.2.   Dissenting Shares.
                    -----------------  Notwithstanding Section
2.1(e), shares of Common Stock outstanding immediately prior to
the Effective Time and held by a holder who has not voted in
favor of the Merger or consented thereto in writing and who has
properly demanded appraisal for such shares of Common Stock in
accordance with Section 351.455 of the Missouri Law shall not be
converted into the Merger Consideration and such holder shall be
entitled only to such rights to appraisal and payment under the
Missouri Law, unless such holder fails to perfect or withdraws or
otherwise loses his right to appraisal.  If after the Effective
Time such holder fails to perfect or withdraws or loses his right
to appraisal, such shares of Common Stock shall be treated as if
they had been converted as of the Effective Time into the Merger
Consideration.  CITATION shall give the Surviving Corporation
prompt notice of any demands received by CITATION for appraisal
of shares of Common Stock, and the Surviving Corporation shall
have the right to participate in all negotiations and proceedings
with respect to such demands.  CITATION shall not, except with the
prior written consent of the Surviving Corporation, make any payment
with respect to, or settle or offer to settle, any such demands.

     Section 2.3.   Surrender of Certificates.
                    -------------------------

          (a)  Cerner, CITATION and Merger Sub hereby appoint the Exchange
     Agent to act as the exchange agent in connection with the Merger.
     Except as otherwise provided in this Article II, from and after
     the Effective Time, each holder of a certificate that immediately
     prior to the Effective Time represented outstanding shares of
     Common Stock (collectively, the "Certificates") shall be entitled
     to receive in exchange therefor, upon surrender thereof to the
     Exchange Agent, (i) a certificate or certificates representing
     the number of whole shares of Cerner Common Stock into which such
     holder's shares were converted in the Merger pursuant to Section
     2.1(e)(i)(A) and (ii) cash in an amount equal to the cash
     consideration to which such holder is entitled to receive
     pursuant to Section 2.1(e)(i)(B).  Prior to the Effective Time,
     the Surviving Corporation will deliver to the Exchange Agent, in
     trust for the benefit of the holders of Common Stock and Cerner
     Common Stock, (i) certificates representing all of the shares of
     Cerner Common Stock to be issued in connection with the Merger
     pursuant to Section 2.1(e)(i)(A), (ii) cash in an amount
     sufficient for payment in lieu of fractional shares necessary to
     make the exchanges contemplated by this Article II on a timely
     basis, and (iii) cash in an amount equal to the cash portion of
     the Merger Consideration pursuant to Section 2.1(e)(i)(B) (such
     shares of Cerner Common Stock and cash

<PAGE>                         A-4

     together with any dividends or distributions with respect thereto,
     being hereinafter referred to as the "Exchange Fund").

     	    (b)  Promptly after the Effective Time, the Exchange Agent shall
     mail to each record holder of Common Stock as of the Effective
     Time, a letter of transmittal (which shall specify that delivery
     shall be effected, and risk of loss and title to Certificates
     shall pass, only upon proper delivery of the Certificates to the
     Exchange Agent) and instructions for use in effecting the
     surrender of Certificates in exchange for the Merger
     Consideration.  Upon surrender to the Exchange Agent of a
     Certificate, together with such letter of transmittal duly
     executed, and any other required documents, the holder of such
     Certificate shall be entitled to receive in exchange therefor,
     certificates representing shares of Cerner Common Stock as set
     forth in this Article II and the cash portion of the Merger
     Consideration, and such Certificate shall forthwith be canceled.
     No holder of a Certificate or Certificates shall be entitled to
     receive any dividend or other distribution from Cerner until the
     surrender of such holder's Certificate for a certificate or
     certificates representing shares of Cerner Common Stock.  Upon
     such surrender, there shall be paid to the holder the amount of
     any dividends or other distributions (without interest) that
     theretofore became payable with record dates after the Effective
     Time, but that were not paid by reason of the foregoing, with
     respect to the number of whole shares of Cerner Common Stock
     represented by the certificates issued upon surrender, which
     amount shall be delivered to the Exchange Agent by Cerner from
     time to time as such dividends or other distributions are
     declared.  If delivery of certificates representing shares of
     Cerner Common Stock is to be made to a person other than the
     person in whose name the Certificate surrendered is registered or
     if any certificate for shares of Cerner Common Stock as the case
     may be, is to be issued in a name other than that in which the
     Certificate surrendered therefor is registered, it shall be a
     condition of such delivery or issuance that the Certificate so
     surrendered shall be properly endorsed or otherwise in proper form
     for transfer and that the person requesting such delivery or issuance
     shall pay any transfer or other Taxes required by reason of such
     delivery or issuance to a person other than the registered holder of
     the Certificate surrendered or establish to the satisfaction of Cerner
     that such Tax has been paid or is not applicable.  Until surrendered in
     accordance with the provisions of this Section 2.3, each Certificate
     shall represent for all purposes only the right to receive shares of
     Cerner Common Stock (and cash in lieu of fractional shares) and the
     cash portion of the Merger Consideration as provided in this Article II
     without any interest thereon.

          (c)  After the Effective Time, there shall be no transfers on the
     stock transfer books of the Surviving Corporation of the shares
     of Common Stock that were outstanding prior to the Effective
     Time.  If, after the Effective Time, Certificates are presented
     to the Surviving Corporation for transfer, they shall be canceled
     and exchanged for shares of Cerner Common Stock (and cash in lieu
     of fractional shares) as provided in this Article II, in
     accordance with the procedures set forth in this Section 2.3.

          (d)  Any portion of the Exchange Fund made available to the
     Exchange Agent which remains undistributed to the former
     shareholders of CITATION for one year after the Effective Time
     shall be delivered to the Surviving Corporation, upon demand, and
     any shareholders of CITATION who have not theretofore complied
     with this Article II shall thereafter look only to the Surviving
     Corporation for payment of their claim for Merger Consideration
     and any dividends or distributions with respect to Cerner Common
     Stock.

          (e)  None of CITATION, Cerner, or the Surviving Corporation shall
     be liable to any holder of shares of Common Stock for the Merger
     Consideration (or dividends or distributions with respect
     thereto) delivered to a public official pursuant to any
     applicable abandoned property, escheat or similar law.  Any
     amounts remaining unclaimed by holders of any such shares two
     years after the Effective Time (or such earlier date immediately
     prior to such time as such amounts would otherwise escheat to or
     become property of any Governmental Entity) shall, to the extent
     permitted by applicable law, become the property of the Surviving
     Corporation free and clear of any claims or interest of any such
     holders or their successors, assigns or personal representatives
     previously entitled thereto.

     Section 2.4.   Affiliates.
                    ----------  Notwithstanding anything to the
contrary herein, to the full extent permitted by law, no
certificates representing shares of Cerner Common Stock or cash
shall be delivered to a Person who may

<PAGE>                         A-5

be deemed an "affiliate" of CITATION in accordance with Section 7.7
hereof, until such Person has executed and delivered an Affiliate
Agreement pursuant to Section 7.7.

                          ARTICLE III

            REPRESENTATIONS AND WARRANTIES OF CERNER

     Except as disclosed in the Cerner Disclosure Schedule
delivered to CITATION separately prior to, or contemporaneously
with, the date hereof (each section or subsection of which
qualifies the correspondingly numbered representation, warranty
or covenant to the extent specified therein), Cerner represents
and warrants to CITATION that:

     Section 3.1.   Corporate Existence and Power.
                    -----------------------------  Cerner is a
corporation duly incorporated, validly existing and in good
standing under the laws of the State of Delaware, and has all
corporate powers required to carry on its business as now
conducted.  Cerner is duly qualified to do business as a foreign
corporation and is in good standing in each jurisdiction where
the character of the property owned or leased by it or the nature
of its activities makes such qualification necessary, except
where the failure to be so qualified, individually or in the
aggregate, would not be reasonably likely to have a Cerner
Material Adverse Effect.

     Section 3.2.   Corporate Authorization.
                    -----------------------  The execution, delivery
and performance by Cerner of this Agreement and the consummation
by Cerner of the transactions contemplated hereby are within
Cerner's corporate powers and have been duly authorized by all
necessary corporate action.  Assuming that this Agreement
constitutes the valid and binding obligation of CITATION, this
Agreement constitutes a valid and binding agreement of Cerner,
enforceable in accordance with its terms, except as such
enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium and similar laws, now or hereafter in
effect, relating to or affecting creditors' rights and remedies
generally and to general principles of equity (regardless of
whether such enforceability is considered in a proceeding in
equity or at law).

      Section 3.3.   Governmental Authorization.
                     --------------------------  The execution,
delivery and performance by Cerner of this Agreement and the
consummation by Cerner of the transactions contemplated hereby
require no action by or in respect of, or filing with, any
Governmental Entity other than (a) the filing of (i) Articles of
Merger in accordance with the Missouri Law, (ii) a Certificate of
Merger in accordance with the Delaware Law, and (iii) appropriate
documents with the relevant authorities of other states or
jurisdictions in which Cerner or any Cerner Subsidiary is
qualified to do business; (b) compliance with any applicable
requirements of the Hart-Scott-Rodino Antitrust Improvements Act
of 1976 (the "HSR Act") by Cerner and CITATION; (c) compliance
with any applicable requirements of the Securities Act and the
Exchange Act; (d) such as may be required under any applicable
state securities or blue sky laws; and (e) such other consents,
approvals, actions, orders, authorizations, registrations,
declarations and filings that, if not obtained or made, would
not, individually or in the aggregate, (x) be reasonably likely
to have a Cerner Material Adverse Effect or (assuming for this
purpose that the Effective Time had occurred) a Surviving
Corporation Material Adverse Effect, or (y) prevent or materially
impair the ability of Cerner to consummate the transactions
contemplated by this Agreement.

      Section 3.4.   Non-Contravention.
                     -----------------  The execution, delivery and
performance by Cerner of this Agreement and the consummation by
Cerner of the transactions contemplated hereby do not and will
not (a) contravene or conflict with Cerner's Certificate of
Incorporation or Bylaws, (b) assuming compliance with the matters
referred to in Section 3.3, contravene or conflict with or constitute
a violation of any provision of any law, regulation, judgment,
injunction, order or decree binding upon or applicable to Cerner or
any Cerner Subsidiary, (c) constitute a default under or give rise
to a right of termination, cancellation or acceleration of any right
or obligation of Cerner or any Cerner Subsidiary or to a loss of any
benefit or status to which Cerner or any Cerner Subsidiary is entitled
under any provision of any agreement, contract or other instrument
binding upon Cerner or any Cerner Subsidiary or any license, franchise,
permit or other similar authorization held by Cerner or any Cerner
Subsidiary, or (d) result in the creation or imposition of any Lien on
any asset of Cerner or any Cerner Subsidiary other than, in the case of
each of clauses (b), (c) and (d), any such items that would not,
individually or in the aggregate (x) be reasonably likely to have
a Cerner Material Adverse Effect or (y) prevent or materially
impair the ability of Cerner to consummate the transactions
contemplated by this Agreement.

<PAGE>                             A-6

     Section 3.5.   Cerner SEC Documents.
                    --------------------

          (a)  Cerner has filed all reports, filings, registration
     statements and other documents required to be filed by it with
     the SEC since January 1, 1995.  No Cerner Subsidiary is required
     to file any form, report, registration statement or prospectus or
     other document with the SEC.

         (b)  As of its filing date, each Cerner SEC Document complied as
     to form in all material respects with the applicable requirements
     of the Securities Act and/or the Exchange Act, as the case may
     be.

         (c)  No Cerner SEC Document filed pursuant to the Exchange Act
     contained, as of its filing date, any untrue statement of a
     material fact or omitted to state any material fact necessary in
     order to make the statements made therein, in the light of the
     circumstances under which they were made, not misleading.  No
     Cerner SEC Document, as amended or supplemented, if applicable,
     filed pursuant to the Securities Act contained, as of the date
     such document or amendment became effective, any untrue statement
     of a material fact or omitted to state any material fact required
     to be stated therein or necessary to make the statements therein
     not misleading.

          (d)  Cerner and the Cerner Subsidiaries keep proper accounting
     records in which all material assets and liabilities, and all
     material transactions, of Cerner and the Cerner Subsidiaries are
     recorded in conformity with United States generally accepted
     accounting principles ("GAAP") applied on a consistent basis.  No
     part of Cerner's or any Cerner Subsidiary's accounting system or
     records, or access thereto, is under the control of a Person who
     is not an employee of Cerner or such Subsidiary.

     	Section 3.6.   Information to be Supplied.
                     --------------------------

          (a)  The information to be supplied by Cerner expressly for
     inclusion or incorporation by reference in the Joint Proxy
     Statement/Prospectus will (i) in the case of the Registration
     Statement, at the time it becomes effective, not contain any
     untrue statement of a material fact or omit to state any material
     fact required to be stated therein or necessary in order to make the
     statements therein not misleading and (ii) in the case of the
     remainder of the Joint Proxy Statement/Prospectus, at the time of the
     mailing thereof, and at the time of the Special Meeting, not contain
     any untrue statement of a material fact or omit to state any material
     fact required to be stated therein or necessary in order to make the
     statements therein, in light of the circumstances under which they are
     made, not misleading.  The Joint Proxy Statement/Prospectus will comply
    (with respect to information relating to Cerner) as to form in all material
     respects with the provisions of the Securities Act and the Exchange Act.

          (b)  Notwithstanding the foregoing, Cerner makes no
     representation or warranty with respect to any statements made or
     incorporated by reference in the Joint Proxy Statement/Prospectus
     based on and in accordance with information supplied by CITATION.

     Section 3.7.   Absence of Certain Changes.
                    --------------------------  Since January 1,
2000, except as otherwise expressly contemplated by this
Agreement, Cerner and the Cerner Subsidiaries have conducted
their business in the ordinary course consistent with past
practice and there has not been (a) any damage, destruction or
other casualty loss (whether or not covered by insurance)
affecting the business or assets of Cerner or any Cerner
Subsidiary that, individually or in the aggregate, has had or
would be reasonably likely to have a Cerner Material Adverse
Effect, (b) any action, event, occurrence, development or state
of circumstances or facts that, individually or in the aggregate,
has had or would be reasonably likely to have a Cerner Material
Adverse Effect or (c) any incurrence, assumption or guarantee by
Cerner of any material indebtedness for borrowed money other than
in the ordinary course and in amounts and on terms consistent
with past practices.

	Section 3.8.   Litigation.
               	   ----------  Section 3.8 of the Cerner Disclosure
Schedule contains a list and description of each action, suit,
investigation, arbitration or proceeding pending against, or to
the Knowledge of Cerner threatened against, Cerner or any Cerner
Subsidiary or any of their respective assets or properties before
any arbitrator or Governmental Entity.  None of such actions,
suits, investigations, arbitrations or proceedings,

<PAGE>                       A-7

individually or in the aggregate, is reasonably likely to have,
a Cerner Material Adverse Effect.  There are no outstanding judgments,
decrees, injunctions, awards or orders against Cerner that are
reasonably likely to have, individually or in the aggregate, a
Cerner Material Adverse Effect.

     Section 3.9.   Finders' Fees.
                    -------------  There is no investment banker,
broker, finder or other intermediary that has been retained by,
or is authorized to act on behalf of, Cerner or any Cerner
Subsidiary who might be entitled to any fee or commission from
CITATION or any of its Affiliates upon consummation of the
transactions contemplated by this Agreement.

	Section 3.10.  Capitalization.
                     --------------  The authorized capital stock of
Cerner consists of 150,000,000 shares of Cerner Common Stock and
1,000,000 shares of preferred stock.  At the close of business on
April 1, 2000, (i) 33,802,391 shares of Cerner Common Stock were
issued and outstanding, (ii) stock options and warrants to
purchase an aggregate 14,031,988 shares of Cerner Common
Stock were issued and outstanding (of which options and warrants
to purchase an aggregate of 5,421,303  shares of Cerner
Common Stock were exercisable), (iii) no shares of Cerner Common
Stock were held in its treasury, except as disclosed in the
Cerner Financial Statements, (iv) no shares of preferred stock of Cerner
were issued and outstanding, and (v) no stock options and warrants to
purchase preferred stock of Cerner were issued and outstanding, other
than the rights issued in connection with the Amended and Restated
Rights Agreement, dated March 12, 1999, by and between Cerner and
Exchange Agent.  All outstanding shares of capital stock of Cerner have
been duly authorized and validly issued and are fully paid and
nonassessable.

     Section 3.11.  Financial Statements; No Material Undisclosed
                    ---------------------------------------------
Liabilities.
-----------
          (a)  The audited consolidated balance sheets of Cerner as of
     January 3, 1998, January 2, 1999 and January 1, 2000, together
     with the related audited consolidated statements of operations,
     stockholders' equity and cash flows for the fiscal years then
     ended and the notes thereto (the "Cerner Financial Statements")
     fairly present in all material respects, in conformity with GAAP
     consistently applied (except as may be indicated in the notes
     thereto), the financial position of Cerner as of the dates
     thereof and its results of operations, stockholders' equity and
     consolidated cash flows for the periods then ended.

         (b)  There are no liabilities of Cerner of any kind whatsoever,
     whether accrued, contingent, absolute, determined, determinable
     or otherwise, in each case, that are required by GAAP to be set
     forth on a balance sheet of Cerner, other than:

              (i)  liabilities or obligations disclosed or provided for in the
          Cerner Balance Sheet or disclosed in the notes thereto;

              (ii) liabilities or obligations under this Agreement or incurred
          in connection with the transactions contemplated hereby; and

              (iii) other liabilities or obligations that individually or
          in the aggregate, would not be reasonably likely to have a Cerner
          Material Adverse Effect.

     Section 3.12.  Taxes.
                    -----

         (a)  All Tax returns, statements, reports and forms
     (collectively, the "Cerner Returns") required to be filed with
     any taxing authority by, or with respect to, Cerner and the
     Cerner Subsidiaries have been filed in substantial compliance
     with all applicable laws.

         (b)  Cerner has timely paid all Taxes shown as due and payable on
     the Cerner Returns that have been so filed, and all other Taxes
     not subject to reporting obligations, and as of the time of
     filing, the Cerner Returns correctly reflected the facts
     regarding the income, business, assets, operations, activities
     and the status of Cerner and the Cerner Subsidiaries (other than
     Taxes that are being contested in good faith and for which
     adequate reserves are reflected on the Cerner Balance Sheet).

<PAGE>                             A-8

         (c)  Cerner has made provision for all Taxes payable by them for
     which no Cerner Return has yet been filed.

         (d)  The charges, accruals and reserves for Taxes with respect to
     Cerner reflected on the Cerner Balance Sheet are materially
     adequate under GAAP to cover the Tax liabilities accruing through
     the date thereof.

         (e)  There is no action, suit, proceeding, audit or claim now
     proposed or pending against or with respect to Cerner in respect
     of any Tax that is reasonably likely to have a Cerner Material
     Adverse Effect.

         (f)  Cerner has not been a member of an affiliated, consolidated,
     combined or unitary group other than one of which Cerner was the
     common parent.

         (g)  Cerner does not hold any asset subject to a consent under
     Section 341(f) of the Code.

                           ARTICLE IV

           REPRESENTATIONS AND WARRANTIES OF CITATION

     Except as disclosed in the CITATION Disclosure Schedule
delivered to Cerner separately prior to, or contemporaneously
with, the date hereof (each section or subsection of which
qualifies the correspondingly numbered representation, warranty
or covenant to the extent specified therein), CITATION represents
and warrants to Cerner that:

     Section 4.1.   Corporate Existence and Power.
                    -----------------------------  CITATION is a
corporation duly incorporated, validly existing and in good
standing under the laws of the State of Missouri, and has all
corporate powers required to carry on its business as now
conducted.  CITATION is duly qualified to do business as a
foreign corporation and is in good standing in each jurisdiction
where the character of the property owned or leased by it or the
nature of its activities makes such qualification necessary,
except where the failure to be so qualified, individually or in
the aggregate, would not be reasonably likely to have a CITATION
Material Adverse Effect.  CITATION has heretofore made available
to Cerner true and complete copies of CITATION's Articles of
Incorporation and Bylaws as currently in effect.

	Section 4.2.   Corporate Authorization.
                     -----------------------  The execution, delivery
and performance by CITATION of this Agreement and the
consummation by CITATION of the transactions contemplated hereby
are within CITATION's corporate powers and, except for the
CITATION Shareholder Approval, have been duly authorized by all
necessary corporate action.  Assuming that this Agreement
constitutes the valid and binding obligation of Cerner and Merger
Sub, this Agreement constitutes a valid and binding agreement of
CITATION, enforceable in accordance with its terms, except as
such enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium and similar laws, now or hereafter in
effect, relating to or affecting creditors' rights and remedies
generally and to general principles of equity (regardless of
whether such enforceability is considered in a proceeding in
equity or at law).

	Section 4.3.   Governmental Authorization.
                     --------------------------  The execution,
delivery and performance by CITATION of this Agreement and the
consummation by CITATION of the transactions contemplated hereby
require no action by or in respect of, or filing with, any
Governmental Entity other than (a) the filing of (i) the Articles
of Merger in accordance with the Missouri Law, (ii) the Certificate
of Merger in accordance with the Delaware Law, and (iii)
appropriate documents with the relevant authorities of other states
or jurisdictions in which CITATION or any CITATION Subsidiary is
qualified to do business; (b) compliance with any applicable
requirements of the HSR Act; (c) compliance with any applicable
requirements of the Securities Act and the Exchange Act; (d) such
as may be required under any applicable state securities or blue sky
laws; and (e) such other consents,approvals, actions, orders,
authorizations, registrations, declarations and filings that, if not
obtained or made, would not, individually or in the aggregate, (x)
be reasonably likely to have a CITATION Material Adverse Effect or
(assuming for this

<PAGE>                           9

purpose that the Effective Time had occurred) a Surviving Corporation
Material Adverse Effect, or (y) prevent or materially impair the
ability of CITATION to consummate the transactions contemplated by
this Agreement.

	Section 4.4.   Non-Contravention.
                     -----------------  The execution, delivery and
performance by CITATION of this Agreement and the consummation by
CITATION of the transactions contemplated hereby do not and will
not (a) contravene or conflict with CITATION's Articles of
Incorporation or Bylaws, (b) assuming compliance with the matters
referred to in Section 4.3 and the CITATION Shareholder Approval,
contravene or conflict with or constitute a violation of any
provision of any law, regulation, judgment, injunction, order or
decree binding upon or applicable to CITATION, (c) constitute a
breach or default under or give rise to a right of termination,
cancellation or acceleration of any right or obligation of
CITATION or any CITATION Subsidiary or to a loss of any benefit
or status to which CITATION is entitled under any provision of
any agreement, contract or other instrument binding upon CITATION
or any CITATION Subsidiary or any license, franchise, permit or
other similar authorization held by CITATION, or (d) result in
the creation or imposition of any Lien on any asset of CITATION
other than, in the case of each of clauses (b), (c) and (d), any
such items that would not, individually or in the aggregate (x)
be reasonably likely to have a CITATION Material Adverse Effect
or (y) prevent or materially impair the ability of CITATION to
consummate the transactions contemplated by this Agreement.

     Section 4.5.   Capitalization.
                    --------------

          (a)  The authorized capital stock of CITATION consists of
     10,000,000 shares of Common Stock and 5,000,000 shares of
     CITATION Preferred Stock.  At the close of business on May 12,
     2000, (i) 3,876,655 shares of Common Stock were issued and
     outstanding, (ii) stock options ("CITATION Stock Options") and
     warrants ("CITATION Warrants") to purchase an aggregate of
     471,500 shares of Common Stock were issued and outstanding (of
     which options and warrants to purchase an aggregate of 381,898
     shares of Common Stock were exercisable), (iii) no shares of
     Common Stock were held in its treasury, (iv) no shares of
     CITATION Preferred Stock were issued and outstanding, and (v) no
     stock options and warrants to purchase CITATION Preferred Stock
     were issued and outstanding.  All outstanding shares of capital
     stock of CITATION have been duly authorized and validly issued
     and are fully paid and nonassessable.

           (b)  As of the date hereof, except (i) as set forth in this
     Section 4.5, and (ii) for changes since March 31, 2000, resulting
     from the exercise of stock options outstanding on such date,
     there are no outstanding (x) shares of capital stock or other
     voting securities of CITATION, (y) securities of CITATION
     convertible into or exchangeable for shares of capital stock or
     voting securities of CITATION, or (z) options or other rights to
     acquire from CITATION, and no obligation of CITATION to issue, any
     capital stock, voting securities or securities convertible
     into or exchangeable for capital stock or voting securities of
     CITATION (the items in clauses (x), (y) and (z) being referred to
     collectively as the "CITATION Securities").  There are no
     outstanding obligations of CITATION or any CITATION Subsidiary to
     repurchase, redeem or otherwise acquire any CITATION Securities.

     There are no outstanding contractual obligations of CITATION to
     provide funds to, or make any investment (in the form of a loan,
     capital contribution or otherwise) in, any other Person.  There
     are no stockholder agreements, voting trusts or other agreements
     or understandings to which CITATION is a party, or of which
     CITATION is aware, relating to voting, registration or
     disposition of any shares of capital stock of CITATION or
     granting to any person or group of persons the right to elect, or
     to designate or nominate for election, a director to the board of
     directors of CITATION.

     Section 4.6.   Subsidiaries.
                    ------------  Except as set forth on the CITATION
Disclosure Statement, CITATION does not have any subsidiaries and
does not own or control, directly or indirectly, any stock or
equity interest in any corporation or other Person.

     Section 4.7.   Financial Statements; No Material Undisclosed
                    ---------------------------------------------
Liabilities.
-----------

          (a)  The audited consolidated balance sheets of CITATION as of
     March 31, 1998 and 1999 and the draft audited consolidated
     balance sheet as of March 31, 2000, together with the related
     audited consolidated statements of operations, shareholders'
     equity and cash flows for the fiscal years then ended in the case
     of fiscal 1998 and 1999 and the draft audited financial
     statements in the case of fiscal 2000, and

<PAGE>                              A-10

     the notes thereto (the "CITATION Financial Statements") fairly
     present in all material respects, in conformity with GAAP
     consistently applied (except as  may be indicated in the notes thereto),
     the financial position of CITATION as of the dates thereof and its
     results of operations, shareholders' equity and consolidated cash flows
     for the periods then ended.

          (b)  There are no liabilities of CITATION of any kind whatsoever,
     whether accrued, contingent, absolute, determined, determinable
     or otherwise, in each case, that are required by GAAP to be set
     forth on a balance sheet of CITATION, other than:

               (i)  liabilities or obligations disclosed or provided for in the
          CITATION Balance Sheet or disclosed in the notes thereto;

               (ii) liabilities or obligations under this Agreement or incurred
          in connection with the transactions contemplated hereby; and

               (iii) other liabilities or obligations that individually or
          in the aggregate, would not be reasonably likely to have a
          CITATION Material Adverse Effect.

     Section 4.8.   CITATION SEC Documents.
                    ----------------------

          (a)  CITATION has filed all reports, filings, registration
     statements and other documents required to be filed by it with
     the SEC since March 31, 1995.  No CITATION Subsidiary is required
     to file any form, report, registration statement or prospectus or
     other document with the SEC.

          (b)  As of its filing date, each CITATION SEC Document complied
     as to form in all material respects with the applicable
     requirements of the Securities Act and/or the Exchange Act, as
     the case may be.

          (c)  No CITATION SEC Document filed pursuant to the Exchange Act
     contained, as of its filing date, any untrue statement of a
     material fact or omitted to state any material fact necessary in
     order to make the statements made therein, in the light of the
     circumstances under which they were made, not misleading.  No
     CITATION SEC Document, as amended or supplemented, if applicable,
     filed pursuant to the Securities Act contained, as of the date
     such document or amendment became effective, any untrue statement
     of a material fact or omitted to state any material fact required
     to be stated therein or necessary to make the statements therein
     not misleading.

         (d)  CITATION and the CITATION Subsidiaries keep proper
     accounting records in which all material assets and liabilities,
     and all material transactions, of CITATION and the CITATION
     Subsidiaries are recorded in conformity with GAAP applied on a
     consistent basis.  No part of CITATION's or any CITATION
     Subsidiary's accounting system or records, or access thereto, is
     under the control of a Person who is not an employee of CITATION
     or such Subsidiary.

     Section 4.9.   Information to be Supplied.
                    --------------------------

          (a)  The information to be supplied by CITATION expressly for
     inclusion or incorporation by reference in the Joint Proxy
     Statement/Prospectus will (i) in the case of the Registration
     Statement, at the time it becomes effective, not contain any
     untrue statement of a material fact or omit to state any material
     fact required to be stated therein or necessary in order to make
     the statements therein not misleading and (ii) in the case of the
     remainder of the Joint Proxy Statement/Prospectus, at the time of
     the mailing thereof, and at the time of the Special Meeting, not
     contain any untrue statement of a material fact or omit to state
     any material fact required to be stated therein or necessary in
     order to make the statements therein, in light of the
     circumstances under which they are made, not misleading.  The
     Joint Proxy Statement/Prospectus will comply (with respect to
     information relating to CITATION) as to form in all material
     respects with the provisions of the Securities Act and the
     Exchange Act.

<PAGE>                              A-11

           (b)  Notwithstanding the foregoing, CITATION makes no
     representation or warranty with respect to any statements made or
     incorporated by reference in the Joint Proxy Statement/Prospectus
     based on and in accordance with information supplied by Cerner.

     Section 4.10.  Absence of Certain Changes.
                    --------------------------  Since March 31, 2000,
except as otherwise expressly contemplated by this Agreement,
CITATION has conducted its business in the ordinary course
consistent with past practice and there has not been (a) any
damage, destruction or other casualty loss (whether or not
covered by insurance) affecting the business or assets of CITATION that,
individually or in the aggregate, has had or would be reasonably likely
to have a CITATION Material Adverse Effect, (b) any action, event,
occurrence, development or state of circumstances or facts that,
individually or in the aggregate, has had or would be reasonably likely
to have a CITATION Material Adverse Effect or (c) any incurrence,
assumption or guarantee by CITATION of any material indebtedness for
borrowed money other than in the ordinary course and in amounts and on
terms consistent with past practices.

	Section 4.11.  Litigation.
                     ----------  Section 4.11 of the CITATION
Disclosure Schedule contains a list of each action, suit,
investigation, arbitration or proceeding pending against, or to
the Knowledge of CITATION threatened against, CITATION or any of
its respective assets or properties before any arbitrator or
Governmental Entity.  None of such actions, suits,
investigations, arbitrations or proceedings, individually or in
the aggregate, is reasonably likely to have a CITATION Material
Adverse Effect.  There are no outstanding judgments, decrees,
injunctions, awards or orders against CITATION that are
reasonably likely to have, individually or in the aggregate, a
CITATION Material Adverse Effect.

     Section 4.12.  Taxes.
                    -----

          (a)  All Tax returns, statements, reports and forms
     (collectively, the "CITATION Returns") required to be filed with
     any taxing authority by, or with respect to, CITATION and the
     CITATION Subsidiaries have been filed in substantial compliance
     with all applicable laws.

          (b)  CITATION has timely paid all Taxes shown as due and payable
     on the CITATION Returns that have been so filed, and all other
     Taxes not subject to reporting obligations, and as of the time of
     filing, the CITATION Returns correctly reflected the facts
     regarding the income, business, assets, operations, activities
     and the status of CITATION and the CITATION Subsidiaries (other
     than Taxes that are being contested in good faith and for which
     adequate reserves are reflected on the CITATION Balance Sheet).

         (c)  CITATION has made provision for all Taxes payable by them
     for which no CITATION Return has yet been filed.

         (d)  The charges, accruals and reserves for Taxes with respect to
     CITATION reflected on the CITATION Balance Sheet are materially
     adequate under GAAP to cover the Tax liabilities accruing through
     the date thereof.

         (e)  There is no action, suit, proceeding, audit or claim now
     proposed or pending against or with respect to CITATION in
     respect of any Tax that is reasonably likely to have a CITATION
     Material Adverse Effect.

         (f)  CITATION has not been a member of an affiliated,
     consolidated, combined or unitary group other than one of which
     CITATION was the common parent.

         (g)  CITATION does not hold any asset subject to a consent under
     Section 341(f) of the Code.

<PAGE>                               A-12

     Section 4.13.  Employee Benefits.
                    -----------------

          (a)  Section 4.13(a) of the CITATION Disclosure Schedule contains
     a correct and complete list identifying each material "employee
     benefit plan,", as defined in Section 3(3) of Employee Retirement
     Income Security Act of 1974 ("ERISA"), each employment, severance
     or similar contract, plan, arrangement or policy and each other
     plan or arrangement (written or oral) providing for compensation,
     bonuses, profit-sharing, stock option or other stock related
     rights or other forms of incentive or deferred compensation,
     vacation benefits, insurance coverage (including any self-insured
     arrangements), health or medical benefits, disability benefits,
     workers' compensation, supplemental unemployment benefits,
     severance benefits and post-employment or retirement benefits
     (including compensation, pension, health, medical or life
     insurance benefits) that is maintained, administered or
     contributed to by CITATION or any of its ERISA Affiliates and
     covers any employee or former employee of CITATION or any
     CITATION Subsidiary.  Copies of such plans (and, if applicable,
     related trust agreements) and all amendments thereto and written
     interpretations thereof have been furnished, or will be made
     available upon request, to Cerner together with the most recent
     annual report (Form 5500 including, if applicable, Schedule B
     thereto), all summary plan descriptions and material employee
     communications prepared in connection with any such plan.  Such
     plans are referred to collectively herein as the "CITATION
     Employee Plans."  For purposes of this Section 4.13, "ERISA
     Affiliate" of any Person means any other Person which, together
     with such Person, would be treated as a single employer under
     Section 414 of the Code.

          (b)  No CITATION Employee Plan is now or at any time has been
     subject to Part 3, Subtitle B of Title I of ERISA or Title IV of
     ERISA.  At no time has CITATION or any of its ERISA Affiliates
     contributed to, or been required to contribute to, any
     "multiemployer plan," as defined in Section 3(37) of ERISA (a
     "Multiemployer Plan"), or any other plan subject to Title IV of
     ERISA (a "Retirement Plan"), and neither CITATION nor any of its
     ERISA Affiliates has, or ever has had, any liability (contingent
     or otherwise) relating to the withdrawal or partial withdrawal
     from a Multiemployer Plan.  To the Knowledge of CITATION, no
     condition exists and no event has occurred that would be
     reasonably likely to constitute grounds for termination of any
     CITATION Employee Plan that is a Retirement Plan or, with respect
     to any CITATION Employee Plan that is a Multiemployer Plan,
     presents a material risk of a complete or partial withdrawal
     under Title IV of ERISA and neither CITATION nor any of its ERISA
     Affiliates has incurred any liability under Title IV of ERISA
     arising in connection with the termination of, or complete or
     partial withdrawal from, any plan covered or previously covered
     by Title IV of ERISA that would be reasonably likely to have a
     CITATION Material Adverse Effect.  To the Knowledge of CITATION,
     nothing has been done or omitted to be done and no transaction or
     holding of any asset under or in connection with any CITATION
     Employee Plan has occurred that will make CITATION or any
     CITATION Subsidiary, or any officer or director of CITATION or
     any CITATION Subsidiary, subject to any liability under Title I
     of ERISA or liable for any tax pursuant to Section 4975 of the
     Code (assuming the taxable period of any such transaction expired
     as of the date hereof) that would be reasonably likely to have a
     CITATION Material Adverse Effect.

          (c)  Each CITATION Employee Plan that is intended to be qualified
     under Section 401(a) of the Code now meets, and at all times
     since its inception have met, the requirements for such
     qualification other than such requirements for which a remedial
     amendment period has not expired, and each trust forming a part
     thereof is now, and at all times since its inception has been,
     exempt from tax pursuant to Section 501(a) of the Code. Each such
     plan has received a determination letter from the Internal
     Revenue Service to the effect that such plan is qualified and its
     related trust is exempt from federal income taxes.  CITATION has
     furnished, or will make available upon request, to Cerner copies
     of the most recent Internal Revenue Service determination letters
     with respect to each such CITATION Employee Plan. Each CITATION
     Employee Plan has been maintained and administered in substantial
     compliance with its terms (except that in any case in which any
     CITATION Employee Plan is currently required to comply with a
     provision of ERISA or of the Code, but is not yet to be amended
     to reflect such provision, such plan has been maintained and
     administered in accordance with the provision) and with the
     requirements prescribed by any and all statutes, orders, rules
     and regulations, including but not limited to ERISA and the Code,
     which are applicable to such CITATION Employee Plan.  All
     material reports, returns and similar documents with respect to
     each CITATION Employee Plan required to be filed with any
     governmental

<PAGE>                               A-13

     agency or distributed to any CITATION Employee Plan participant have
     been duly timely filed and distributed.

         (d)  There is no contract, agreement, plan or arrangement that,
     as a result of the Merger, would be reasonably likely to obligate
     CITATION to make any payment of any amount that would not be
     deductible pursuant to the terms of Section 162(m) or Section
     280G of the Code.

         (e)  Except as disclosed in writing to Cerner prior to the date
     hereof, there has been no amendment to, written interpretation or
     announcement (whether or not written) relating to, or change in
     employee participation or coverage under, any CITATION Employee
     Plan that would increase materially the expense of maintaining
     such CITATION Employee Plan above the level of the expense
     incurred in respect thereof for the fiscal year ended March 31,
     2000.

         (f)  No CITATION Employee Plan promises or provides post-
     retirement medical, life insurance or other benefits due now or
     in the future to current, former or retired employees of CITATION
     or any Subsidiary.

     Section 4.14.  Compliance with Laws; Licenses, Permits and
                    -------------------------------------------
Registrations.
-------------

          (a)  CITATION is not in violation of, nor has CITATION violated,
     any applicable provisions of any laws, statutes, ordinances,
     regulations, judgments, injunctions, orders or consent decrees,
     except for any such violations that, individually or in the
     aggregate, would not be reasonably likely to have a CITATION
     Material Adverse Effect.

          (b)  CITATION has all permits, licenses, approvals,
     authorizations of and registrations with and under all federal,
     state, local and foreign laws, and from all Governmental Entities
     required by CITATION to carry on its business as currently conducted,
     except where the failure to have any such permits, licenses,
     approvals, authorizations or registrations, individually or in the
     aggregate, would not be reasonably likely to have a CITATION Material
     Adverse Effect.

     Section 4.15.  Title to Properties.
                    -------------------

          (a)  CITATION has good and marketable title to, or valid
     leasehold interests in, all its properties and assets except for
     such as are no longer used or useful in the conduct of its
     business or as have been disposed of in the ordinary course of
     business and except for defects in title, easements, restrictive
     covenants and similar Liens, encumbrances or impediments that do
     not materially interfere with the ability of CITATION to conduct
     its business as currently conducted.  All such assets and
     properties, other than assets and properties in which CITATION
     has leasehold interests, are free and clear of all Liens, except
     for Liens that do not and will not materially interfere with the
     ability of CITATION to conduct its business as currently
     conducted.

          (b)  CITATION (i) is in substantial compliance with the terms of
     all leases to which it is a party and under which it is in
     occupancy, and all such leases are in full force and effect and
     (ii) enjoys peaceful and undisturbed possession under all such
     leases.

     Section 4.16.  Intellectual Property.
                    ---------------------

          (a)  CITATION owns or has a valid license to use:  (i) all Marks;
     (ii) all Patents; (iii) all Copyrights; and (iv) all Trade
     Secrets; necessary to (x) carry on the business of CITATION as
     currently conducted or as proposed to be conducted by the
     Surviving Corporation, to (y) make, have made, use, distribute
     and sell all products currently sold by CITATION and all products
     in development, in each case, reasonably necessary to conduct
     CITATION's business in the manner conducted on the date hereof.

          (b)  There are no outstanding and, to CITATION's Knowledge, no
     threatened disputes or disagreements with respect to any
     agreement to which CITATION is a party, relating to any of


<PAGE>                          A-14

     CITATION's Marks, Patents, Copyrights, or Trade Secrets
     (collectively, "CITATION Intellectual Property").

          (c)  CITATION is the owner of all right, title, and interest in
     and to the CITATION Intellectual Property, free and clear of all
     Liens and other adverse claims.

          (d)  All former and current employees of CITATION have executed
     written contracts with CITATION that assign to CITATION all
     rights to any inventions, improvements, discoveries, or
     information relating to the business of CITATION. To CITATION's
     Knowledge, no employee of CITATION has entered into any contract
     that restricts or limits in any way the scope or type of work in
     which the employee may be engaged or requires the employee to
     transfer, assign, or disclose information concerning his work to
     anyone other than CITATION.

         (e)  All of the Patents are currently in compliance with formal
    legal requirements (including payment of filing, examination, and
    maintenance fees and proofs of working or use), are valid and
    enforceable, and are not subject to any maintenance fees or taxes or
    actions.

         (f)  CITATION uses reasonable procedures to keep its Trade
    Secrets confidential, and CITATION's Trade Secrets have been
    disclosed only under written agreements that require the
    recipient to hold such Trade Secrets confidential.

         (g)  No Patent has been or is now involved in any interference,
    reissue, reexamination, or opposition proceeding. To CITATION's
    Knowledge, there is no potentially interfering patent or patent
    application of any third party.

         (h)  To CITATION's Knowledge, no CITATION Intellectual Property
    is infringed or, to CITATION's Knowledge, has been challenged or
    threatened in any way. To CITATION's Knowledge, none of the
    products manufactured and sold or proposed to be sold, nor any
    process or know-how used, by CITATION infringes or is alleged to
    infringe any Patent or other proprietary right of any other
    Person.

         (i)  Other than the software licenses set forth in the CITATION
    Disclosure Schedules, CITATION is not required to make any
    payments to any third parties in connection with third party
    technology embedded in the CITATION Intellectual Property.

         (j)  All products made, used, or sold under the Patents have been
    marked with the proper patent notice.

     Section 4.17.  Environmental Matters.
                    ---------------------

          (a)  With such exceptions as, individually or in the aggregate,
     would not be reasonably likely to have a CITATION Material
     Adverse Effect, (i) no written notice, notification, demand,
     request for information, citation, summons, complaint or order
     has been received by, and no investigation, action, claim, suit,
     proceeding or review is pending or to the Knowledge of CITATION,
     threatened by any Person against, CITATION with respect to any
     applicable Environmental Law and (ii) to the Knowledge of
     CITATION, CITATION is and has been in compliance with all
     applicable Environmental Laws.

          (b)  The term "Environmental Laws" means any federal, state,
     local and foreign statutes, laws (including, without limitation,
     common law), judicial decisions, regulations, ordinances, rules,
     judgments, orders, codes, injunctions, permits or governmental
     agreements relating to human health and safety, the environment
     or to pollutants, contaminants, wastes, or chemicals, hazardous
     substances, hazardous materials or hazardous wastes as any of
     those terms is regulated or defined by Environmental Laws.

<PAGE>                               A-15

     Section 4.18.  Finders' Fees; Opinions of Financial Advisor.
                    --------------------------------------------

          (a)  Except for A.G. Edward & Sons, Inc. and AristaQuest, Inc.,
     there is no investment banker, broker, finder or other
     intermediary that has been retained by, or is authorized to act on
     behalf of, CITATION or who might be entitled to any fee or
     commission from CITATION or Cerner or any of its Affiliates upon
     consummation of the transactions contemplated by this Agreement.

          (b)  CITATION has received the oral opinion of A.G. Edwards &
     Sons, Inc., dated as of the date hereof, to the effect that, as
     of such date, the Merger Consideration is fair, from a financial
     point of view, to the holders of shares of Common Stock (other
     than Cerner and any Cerner Subsidiary).

     Section 4.19.  Required Vote and Waiver; Board Approval.
                    ----------------------------------------

          (a)  The only vote or waiver of rights of the holders of any
     class or series of capital stock of CITATION required by law,
     rule or regulation to approve and adopt this Agreement and/or any
     of the other transactions contemplated hereby, including the
     Merger, is the affirmative vote of the holders of more than two-
     thirds of the outstanding shares of Common Stock in favor of the
     approval and adoption of this Agreement and approval of the
     CITATION Merger and the transactions contemplated hereby.

          (b)  CITATION's Board of Directors has unanimously (i) determined
     and declared that this Agreement and the transactions
     contemplated hereby, including the Merger, are advisable and in
     the best interests of CITATION and its shareholders, (ii)
     approved and adopted this Agreement, the Merger and the other
     transactions contemplated hereby and (iii) resolved to recommend
     to such shareholders that they vote in favor of adopting and
     approving this Agreement and the Merger in accordance with the
     terms hereof at a special meeting of the shareholders of CITATION
     duly held for such purpose (the "CITATION Shareholders Meeting").

     Section 4.20.  State Takeover Statutes.
                    -----------------------  CITATION has taken all
actions required to be taken by it in order to exempt this
Agreement, the Shareholder Agreement and the transactions
contemplated by each of them, including the exercise of the
options granted in the Shareholder Agreement, from the provisions
of Section 351.459 of the Missouri Law, and accordingly, such
Sections do not apply to the Merger or any of such transactions.
No other "control share acquisition," "business combination,"
"fair price" or other anti-takeover laws or regulations enacted
under state or federal laws in the United States apply to this
Agreement, the Merger  or any of the transactions contemplated
hereby.

	Section 4.21.  Tax Treatment.
                     -------------  Neither CITATION nor any of its
Affiliates has taken or agreed to take, or will take, any action
or is aware of any fact or circumstance that would prevent or
impede the Merger from qualifying as a 368 Reorganization.

	Section 4.22.  Certain Agreements.
                     ------------------  Neither CITATION nor any of
its Affiliates (i) are parties to or otherwise bound by any
agreement or arrangement that limits or otherwise restricts
CITATION, the Surviving Corporation or any of their respective
Affiliates from engaging or competing in any line of business or
in any locations, which agreement or arrangement is material to
the business of CITATION or would be material to the business of
the Surviving Corporation (assuming the Merger has taken place),
in either case taken as a whole and (ii) except in the ordinary
course of business, have amended, modified or terminated any
material contract, agreement or arrangement of CITATION or any
CITATION Subsidiary or otherwise waived, released or assigned any
material rights, claims or benefits of CITATION or any CITATION
Subsidiary thereunder.

	Section 4.23.  Employment Agreements.
                     ---------------------  There exists (i) no union,
guild or collective bargaining agreement to which CITATION is a
party, (ii) no employment, consulting or severance agreement
between CITATION and any Person (except for consulting agreements
that individually, and in the aggregate, are not material to
CITATION), and (iii) no employment, consulting, severance or
indemnification agreement or other agreement or plan to which
CITATION is a party that would be altered or result in any bonus,
golden parachute, severance or other payment or obligation to any
Person, or result in any acceleration of the time of payment or
in the

<PAGE>                        A-16

provision or vesting of any benefits, as a result of the
execution or performance of this Agreement or as a result of the
Merger or the other transactions contemplated hereby.

	Section 4.24.  Transactions With Directors, Officers and
                     -----------------------------------------
Affiliates.
----------

Except for any of the following matters which would
not be required to be disclosed pursuant to Item 404 of
Regulation S-K of the Commission (assuming CITATION were subject
to such Item), since March 31, 1999, there have been no
transactions between CITATION or any of its Subsidiaries and any
director, officer, employee, shareholder or "Affiliate" (as
identified pursuant to Section 7.7 hereof) of CITATION,
including, without limitation, loans, guarantees or pledges to,
by or for CITATION, from, to, by or for any of such Persons.
Except for any of the following matters which would not be
required to be disclosed pursuant to Item 404 of Regulation S-K
of the Commission (assuming that CITATION was subject to such
Item), since March 31, 1999, none of the officers or directors of
CITATION, and no spouse or relative of any of such Persons, has
been a director or officer of, or has had any material direct or
indirect interest in, any Person which during such period has
been a supplier, customer or sales agent of CITATION or has
competed with or been engaged in any business of the kind being
conducted by CITATION.  Since March 31, 1999, none of the
compensation that would be required to be disclosed pursuant to
Item 402 of Regulation S-K of the Commission (assuming CITATION
were subject to such Item) to all directors, officers, employees,
shareholders or "Affiliates" of CITATION has been increased in a
manner that is inconsistent with the past practices of CITATION.

	Section 4.25.  Material Contracts.
                     ------------------  Schedule 4.25 of the
CITATION Disclosure Schedule lists all material contracts and
agreements to which, as of the date hereof, CITATION is a party
or by which is bound or under which CITATION has or may acquire
any rights, which involve or relate to (i) obligations of CITATION
for borrowed money or other indebtedness where the amount of such
obligations exceeds $75,000 individually, (ii) the lease by
CITATION, as lessee or lessor, of real property for rent of more
than $75,000 per annum, (iii) the purchase or sale of goods
(other than raw material to be purchased by CITATION on terms
that are customary and consistent with the past practice of
CITATION and in amounts and at prices substantially consistent
with past practices of CITATION) or services with an aggregate
minimum purchase price of more than $75,000 per annum, (iv)
rights to manufacture and/or distribute any product which
accounted for more than $75,000 of the consolidated revenues of
CITATION during the fiscal year ended March 31, 2000 or under
which CITATION received or paid license or other fees in excess
of $75,000 during any year, (v) the purchase or sale of assets or
properties not in the ordinary course of business having a
purchase price in excess of $75,000, (vi) the right (whether or
not currently exercisable) to use, license (including any "in-
license" or "outlicense"), sublicense or otherwise exploit any
intellectual property right or other proprietary asset of
CITATION or any other Person which; (vii) any collaboration or
joint venture or similar arrangement; (viii) the restriction on
the right or ability of CITATION (A) to compete with any other
Person, (B) to acquire any product or other asset or any services
from any other Person, (C) to solicit, hire or retain any Person
as an employee, consultant or independent contractor, (D) to
develop, sell, supply, distribute, offer, support or service any
product or any technology or other asset to or for any other
Person, (E) to perform services for any other Person, or (F) to
transact business or deal in any other manner with any other
Person; (ix) any currency hedging; (x) individual capital
expenditures or commitments in excess of $75,000; or (xi) powers
of attorney. All such contracts and agreements are duly and
validly executed by CITATION and are in full force and effect in
all material respects.  CITATION has not materially violated or
breached, or committed any material default under, any contract
or agreement, and, to the Knowledge of CITATION, no other Person
has materially violated or breached, or committed any material
default under, any contract or agreement.  No event has occurred
which, after notice or the passage of time or both, would
constitute a default by CITATION under any contract or agreement
or give any Person the right to (A) declare a default or exercise
any remedy under any contract or agreement, (B) receive or
require a rebate, chargeback, penalty or change in delivery
schedule under any contract or agreement, (C) accelerate the
maturity or performance of any contract or agreement, or (D)
cancel, terminate or modify any contract or agreement, in each
case which, together with all other events of the types referred
to in clauses (A), (B), (C) and (D) of this sentence has had or
may reasonably be expected to have a CITATION Material Adverse
Effect.  All such contracts and agreements will continue, after
the Effective Time, to be binding in all material respects in
accordance with their respective terms until their respective
expiration dates.

	Section 4.26.  Certain Business Practices.
                     --------------------------  Neither CITATION
norto the Knowledge of CITATION any director, officer, agent or
employee of CITATION has (i) used any funds for unlawful
contributions, gifts, entertainment or other unlawful expenses
relating to political activity, (ii) made any unlawful payment to
foreign or domestic government officials or employees or to
foreign or domestic political parties or campaigns or violated
any

<PAGE>                         A-17

provision of the Foreign Corrupt Practices Act of 1977, as
amended, (assuming for purposes of this Section 4.26 that
CITATION is subject to Section 30A of the Exchange Act) or (iii)
made any other unlawful payment.

	Section 4.27.  Insurance.
                     ---------  CITATION has made available to
Cerner a summary of all material insurance policies and all
material self-insurance programs and arrangements relating to the
business, assets and operations of CITATION . Each of such
insurance policies is in full force and effect. Since January 1,
1995, CITATION has not received any notice or other communication
regarding any actual or possible (i) cancellation or invalidation
of any material insurance policy, (ii) refusal of any coverage or
rejection of any material claim under any insurance policy, or
(iii) material adjustment in the amount of the premiums payable
with respect to any insurance policy. There is no pending
workers' compensation or other claim under or based upon any
insurance policy of CITATION other than claims incurred in the
ordinary course of business.

                            ARTICLE V

          REPRESENTATIONS AND WARRANTIES OF MERGER SUB

     Merger Sub represents and warrants to CITATION as follows:

     Section 5.1.   Organization.
                    ------------  Merger Sub is a corporation duly
incorporated, validly existing and in good standing under the
laws of Delaware. Merger Sub is a direct wholly-owned subsidiary
of Cerner.

	Section 5.2.   Corporate Authorization.
                     -----------------------  Merger Sub has all
requisite corporate power and authority to enter into this
agreement and to consummate the transactions contemplated by this
Agreement. The execution, delivery and performance by Merger Sub
of this Agreement and the consummation of the transactions
contemplated by this Agreement have been duly authorized by all
necessary corporate action on the part of Merger Sub.  This
Agreement has been duly executed and delivered by Merger Sub and
assuming this Agreement constitutes a valid and binding agreement
of CITATION, constitutes a valid and binding agreement of Merger
Sub, enforceable against it in accordance with its terms, except
as such enforceability may be limited by bankruptcy, insolvency,
reorganization, moratorium and other similar laws relating to or
affecting creditors generally or by general equity principles.

	Section 5.3.   Non-Contravention.
                     -----------------  The execution, delivery and
performance by Merger Sub of this Agreement and the consummation
by Merger Sub of the transactions contemplated by this Agreement
do not and will not contravene or conflict with its certificate
of incorporation or bylaws.

	Section 5.4.   No Business Activities.
                     ----------------------  Merger Sub has not
conducted any activities other than in connection with the
organization of Merger Sub, the negotiation and execution of this
Agreement and the consummation of the transactions contemplated
by this Agreement. Merger Sub has no subsidiaries.

	Section 5.5.   Taxes.
                     -----  Merger Sub has not taken or agreed to
take, will not take, and is not aware of any fact or circumstance
that would prevent or impede the Merger from qualifying as a 368
Reorganization.

                           ARTICLE VI

                      COVENANTS OF CITATION

     CITATION agrees that:

     Section 6.1.   CITATION Interim Operations.
                    ---------------------------  Except as set forth
in the CITATION Disclosure Schedule or as otherwise expressly
contemplated or permitted hereby, or as required by any
Governmental Entity of competent jurisdiction, without the prior
consent of Cerner, from the date hereof until the Effective Time,
CITATION shall conduct its business in all material respects in
the ordinary course consistent with past practice and shall use
commercially reasonable efforts to (i) preserve intact its
present business organization, (ii) maintain in effect all
material foreign, federal, state and local licenses, approvals
and authorizations, including, without limitation, all material
licenses and permits that are required for CITATION to carry on
its business and (iii)

<PAGE>                        A-18

preserve existing relationships with its material customers, lenders,
suppliers and others having material business relationships with it.
Without limiting the generality of the foregoing, except as otherwise
expressly contemplated or permitted by this Agreement, or as required
by a Governmental Entity of competent jurisdiction, from the date
hereof until the Effective Time, without the prior consent of Cerner,
CITATION shall not:

          (a)  amend its Articles of Incorporation or By-laws;

          (b)  split, combine or reclassify any shares of capital stock of
     CITATION or declare, set aside or pay any dividend;

          (c)  (i) issue, deliver or sell, or authorize the issuance,
     delivery or sale of, any shares of its capital stock of any class
     or any securities convertible into or exercisable for, or any
     rights, warrants or options to acquire, any such capital stock or
     any such convertible securities, other than (A) a number of
     shares of capital stock equal to that number of shares underlying
     options forfeited prior to the Closing by former CITATION
     employees, pursuant to the CITATION Employee Plans, or (B) Common
     Stock upon the exercise of stock options or warrants in
     accordance with their present terms or upon exercise of options
     issued pursuant to clause (A) of this Section 6.1(c)(i); or (ii)
     amend in any respect any term of any outstanding security of
     CITATION;

          (d)  other than in connection with transactions not prohibited by
     Section 6.1(e), incur any capital expenditures or any obligations
     or liabilities in respect thereof, except for those (i)
     contemplated by the capital expenditure budgets for CITATION made
     available to Cerner, or (ii) incurred in the ordinary course of
     business of CITATION and consistent with past practice;

          (e)  except in the ordinary course of business, acquire (whether
     pursuant to cash merger, stock or asset purchase or otherwise) in
     one transaction or series of related transactions (i) any assets
     (including any equity interests) having a fair market value in
     excess of $75,000, or (ii) all or substantially all of the equity
     interests of any Person or any business or division of any Person
     having a fair market value in excess of $75,000, but in no event
     shall the expenditures, commitments, obligations or liabilities
     made, incurred or assumed, as the case may be, by CITATION
     pursuant to Sections 6.1(d) and 6.1(e) exceed $250,000 in the
     aggregate;

          (f)  sell, lease, license, perform services, encumber or
     otherwise dispose of any assets, other than (i) sales or licenses
     of finished goods or the performance of services in the ordinary
     course of business consistent with past practice, (ii) equipment
     and property no longer used in the operation of CITATION's
     business and (iii) assets related to discontinued operations of
     CITATION or any CITATION Subsidiary;

         (g)  (i) incur any indebtedness for borrowed money or guarantee
     any such indebtedness, (ii) issue or sell any debt securities or
     warrants or rights to acquire any debt securities of CITATION,
     (iii) make any loans, advances or capital contributions to or
     investments in, any other Person, or (iv) guarantee any debt
     securities or indebtedness of others in any case in an amount in excess
     of $50,000, except, in each case, in the ordinary course of business
     consistent with past practice (which exception shall include, without
     limitation, borrowings under CITATION's existing credit agreements and
     overnight borrowings);

         (h)  (i) enter into any agreement or arrangement that limits or
     otherwise restricts CITATION or any of its Affiliates or any
     successor thereto or that would, after the Effective Time, limit
     or restrict CITATION or the Surviving Corporation, or any of
     their respective Affiliates, from engaging or competing in any
     line of business or in any location, or (ii) enter into, amend,
     modify or terminate any material contract, agreement or
     arrangement of CITATION or otherwise waive, release or assign any
     material rights, claims or benefits of CITATION thereunder;
     provided, however, that this Section 6.1(h) shall not prevent
     CITATION from entering into material contracts with customers,
     suppliers or distributors, so long as such contracts are entered
     into in the ordinary course and consistent with CITATION's prior
     practice;

<PAGE>                              A-19

         (i)  (i) except as required by law or a written agreement
     existing on or prior to the date hereof, or as consistent with
     past practice and routine raises on anniversary dates, increase
     the amount of compensation of any director or executive officer
     or make any increase in or commitment to increase any employee
     benefits, (ii) except as required by law, a written agreement
     existing on or prior to the date hereof, or a CITATION severance
     policy existing as of the date hereof, grant any severance or
     termination pay to any director, officer or employee of CITATION
     or, (iii) adopt any additional employee benefit plan or, except
     in the ordinary course of business consistent with past practice
     and containing only normal and customary terms, or make any
     contribution to any existing such plan or (iv) except as may be
     required by law or a written agreement or employee benefit plan
     existing on or prior to the date hereof, or as contemplated by
     this Agreement, enter into, amend in any respect, or accelerate
     the vesting under any CITATION Employee Plan, employment
     agreement, option, license agreement or retirement agreements, or
     (v) hire any employee with an annual base salary in excess of
     $75,000;

         (j)  change (x) CITATION's methods of accounting in effect at
     March 31, 2000 except as required by changes in GAAP, as
     concurred with by its independent public accountants, or (y)
     CITATION's fiscal year;

         (k)  (i) settle, propose to settle or commence, any litigation,
     investigation, arbitration, proceeding or other claim that is
     material to the business of CITATION, other than the payment,
     discharge or satisfaction, in the ordinary course of business
     consistent with past practice of liabilities (x) recognized or
     disclosed in the CITATION Financial Statements (or the notes
     thereto) or (y) incurred since the date of such Financial
     Statements in the ordinary course of business consistent with
     past practice, or (ii) make any material Tax election or enter
     into any settlement or compromise of any Tax liability other than
     in the ordinary course of business consistent with past practices
     and containing only normal and customary terms;

         (l)  enter into any new material line of business;

         (m)  except to the extent required to comply with its obligations
     hereunder or required by law, CITATION shall not amend or propose
     to so amend its Articles of Incorporation, Bylaws or other
     governing documents; or

         (n)  agree, resolve or commit to do any of the foregoing.

     Section 6.2.   Acquisition Proposals; Board Recommendation.
                    -------------------------------------------

          (a)  CITATION agrees that it shall not, nor shall it authorize or
     knowingly permit any officer, director, employee, investment
     banker, attorney, accountant, agent or other advisor or
     representative of CITATION, directly or indirectly, to (i)
     solicit, initiate or knowingly facilitate or encourage the
     submission of any Acquisition Proposal for CITATION, (ii)
     participate in any discussions or negotiations regarding, or
     furnish to any Person any information with respect to, or take
     any other action knowingly to facilitate any inquiries or the
     making of any proposal that constitutes an Acquisition Proposal
     for CITATION, (iii) grant any waiver or release under any
     standstill or similar agreement with respect to any class of
     CITATION equity securities or (iv) enter into any agreement with
     respect to any Acquisition Proposal for CITATION; provided,
     however, that if, at any time prior to receipt of the CITATION
     Shareholder Approval, CITATION's Board of Directors reasonably
     determines in good faith, after receipt of written advice from
     outside counsel and independent financial advisor of CITATION,
     that failing to take such action could reasonably be expected to
     be a breach of its fiduciary duties to CITATION's shareholders
     under applicable law, CITATION may, in response to an Acquisition
     Proposal for CITATION made after the date of this Agreement which
     was not solicited by CITATION or its representatives or agents
     and which did not otherwise result from a breach of this Section
     6.2, and which is reasonably likely to lead to a Superior
     Proposal, and subject to compliance with Section 6.2(c)
     (x) furnish information with respect to CITATION to any person
     pursuant to a customary confidentiality agreement including
     customary standstill provisions (as determined by CITATION after
     consultation with its outside counsel) and (y) participate in
     negotiations regarding such Acquisition Proposal for CITATION.

<PAGE>                            A-20

          (b)  Neither the Board of Directors of CITATION nor any committee
     thereof shall (i) withdraw, or propose publicly to withdraw, in a
     manner adverse to Cerner, the approval or recommendation by such
     Board of Directors or such committee of the Merger or this
     Agreement, (ii) subject to Section 6.2(d), modify, or propose
     publicly to modify, in a manner adverse to Cerner, the approval
     or recommendation by such Board of Directors or such committee of
     the Merger or this Agreement, (iii) approve or recommend, or
     propose publicly to approve or recommend, any Acquisition
     Proposal for CITATION or (iv) approve or recommend, or propose to
     approve or recommend, or execute or enter into, any letter of
     intent, agreement in principle, merger agreement, acquisition
     agreement, option agreement or other similar agreement or propose
     publicly or agree to do any of the foregoing related to any
     Acquisition Proposal for CITATION.  Notwithstanding the
     foregoing, if at any time prior to receipt of CITATION
     Shareholder Approval the Board of Directors of CITATION
     determines in good faith, after receipt of written opinions from
     outside counsel and independent financial advisor of CITATION,
     that it has received an Acquisition Proposal for CITATION that
     constitutes a Superior Proposal which did not result from a breach
     of this Section 6.2 and that failure to do one of the following
     could reasonably be expected to be a breach of its fiduciary duties
     to CITATION's shareholders under applicable Law, the Board of
     Directors of CITATION may (subject to this and the following
     sentences), after paying to Cerner the Termination Fee,
     (x) withdraw or modify its approval or recommendation of the
     Merger and this Agreement, (y) approve or recommend the Superior
     Proposal (as defined below), or (z) or terminate this Agreement
     (and concurrently with or after such termination, if it so
     chooses, cause CITATION to enter into any Acquisition Agreement
     with respect to the Superior Proposal), but in each of the cases
     set forth in clause (x), (y) or (z), only at a time prior to
     receipt of the CITATION Shareholder Approval and only at a time
     that is after the tenth business day following Cerner's receipt
     of written notice advising Cerner that the Board of Directors of
     CITATION has received a Superior Proposal, specifying the
     material terms and conditions of such Superior Proposal and
     identifying the person making such Superior Proposal.  Any such
     withdrawal or modification of the recommendation of the Merger
     and this Agreement and the transactions contemplated hereby shall
     not change the approval of the Board of Directors of CITATION for
     purposes of causing Section 351.459 of the Missouri Law to be
     inapplicable to the Merger and this Agreement, the transactions
     contemplated hereby and Cerner's entering into the Shareholder
     Agreement and acquiring shares of Common Stock upon exercise of
     the options granted therein.  For all purposes of this Agreement,
     a "Superior Proposal" means any bona fide proposal made by a
     third party to acquire, directly or indirectly, for consideration
     consisting of cash and/or securities, 100% of the CITATION
     Securities then outstanding (whether pursuant to a tender or
     exchange offer, merger, consolidation, share exchange, or other
     business combination) or all or substantially all the assets of
     CITATION and otherwise on terms which the Board of Directors of
     CITATION determines in its good faith judgment (based on a
     written opinion of CITATION's financial advisor) to be materially
     more favorable to CITATION and its shareholders than the Merger
     (taking into account any changes to the financial and other
     contractual terms of this Agreement proposed by Cerner in
     response to such proposal, the Person making the proposal, any
     legal or regulatory considerations and all other relevant
     financial and strategic considerations, including the timing of
     the consummation of such transactions) and for which financing,
     to the extent required, is then committed or which, in the good
     faith judgment of the Board of Directors of CITATION, is
     reasonably capable of being obtained by such third party.

         (c)  In addition to the obligations of CITATION set forth in
     paragraphs (a) and (b) of this Section 6.2, CITATION shall
     immediately advise Cerner orally and in writing of any request
     for information or of any Acquisition Proposal for CITATION, the
     material terms and conditions of such request or Acquisition
     Proposal for CITATION and the identity of the person making such
     request or Acquisition Proposal for CITATION.  CITATION will keep
     Cerner fully informed of the status and details (including
     amendments or proposed amendments) of any such request or
     Acquisition Proposal for CITATION.  If, after CITATION receives a
     Superior Proposal, Cerner desires to continue negotiations with
     CITATION with respect to the Merger,  CITATION agrees to
     negotiate in good faith with Cerner.

         (d)  Nothing contained in this Section 6.2 shall prohibit
     CITATION from taking and disclosing to its shareholders a
     position contemplated by Rule 14d-9 and 14e-2(a) promulgated
     under the Exchange Act or from making any disclosure to
     CITATION's shareholders if, in the good faith judgment of the
     Board of Directors of CITATION, after consultation with outside
     counsel, failure so to disclose would be inconsistent with its
     fiduciary duties to CITATION's shareholders under applicable Law;
     provided,

<PAGE>                               A-21

     however, neither CITATION nor its Board of Directors
     nor any committee thereof shall, except as permitted by Section
     6.2(b), withdraw or modify, or propose publicly to withdraw or
     modify, its position with respect to the Merger or this Agreement
     or approve or recommend, or propose publicly to approve or
     recommend, an Acquisition Proposal for CITATION.

     Section 6.3.   Employment Agreements.
                    ---------------------  CITATION agrees to use its
reasonable best efforts to cause each of the employees of
CITATION identified in Exhibit F hereto to execute and deliver to
Cerner employment agreements in the form attached hereto as
Exhibit G.  CITATION agrees that it will not terminate the
employment of J. Robert Copper, Richard D. Neece, or any of the
employees of CITATION identified on Exhibit F hereto, without the
prior written consent of Cerner.

	Section 6.4.   Shareholder Agreement.
                     ---------------------  CITATION agrees to use its
reasonable best efforts to cause each of the shareholders of
CITATION who is a party to the Shareholders Agreement to comply
with the covenants set forth in Article IV of the Shareholders
Agreement.

                             ARTICLE VII

                COVENANTS OF CITATION AND CERNER

     The parties hereto agree that:

     Section 7.1.   Reasonable Best Efforts.
                    -----------------------  Subject to the terms and
conditions hereof, each party will use reasonable best efforts to
take, or cause to be taken, all actions and to do, or cause to be
done, all things necessary, proper or advisable under applicable
laws and regulations to consummate the transactions contemplated
by this Agreement as promptly as practicable.

	Section 7.2.   Certain Filings; Cooperation in Receipt of
                     ------------------------------------------
Consents; Listing.
-----------------

As promptly as reasonably practicable after
the date hereof, CITATION and Cerner shall prepare and Cerner
shall file with the SEC the Registration Statement, in which the
Joint Proxy Statement/Prospectus will be included as Cerner's
prospectus.  Each of CITATION and Cerner shall use all reasonable
efforts to have the Registration Statement declared effective
under the Securities Act as promptly as reasonably practicable
after such filing and to keep the Registration Statement
effective as long as is necessary to consummate the Merger and
the transactions contemplated thereby.  CITATION shall mail the
Joint Proxy Statement/Prospectus to its shareholders as promptly
as reasonably practicable after the Registration Statement is
declared effective under the Securities Act and, if necessary,
after the Joint Proxy Statement/Prospectus shall have been so
mailed, promptly circulate amended, supplemental or supplemented
proxy material, and, if required in connection therewith,
resolicit proxies.  On or before the effectiveness of the Registration
Statement, CITATION shall file the Joint Proxy/Prospectus with the SEC.
Cerner and CITATION shall take any action (other than qualifying to do
business in any jurisdiction in which it is not now so qualified or to
file a general consent to service of process) required to be taken under
any applicable state securities or blue sky laws in connection
with the issuance of shares of Cerner Common Stock in the Merger.

          (a)  No amendment or supplement to the Joint Proxy
     Statement/Prospectus will be made by CITATION or Cerner without
     the approval of the other party, which will not be unreasonably
     withheld or delayed.  Each party will advise the other party,
     promptly after it receives notice thereof, of (i) the time when
     the Registration Statement has become effective or any supplement
     or amendment has been filed, (ii) the issuance of any stop order,
     (iii) the suspension of the qualification of the shares of Cerner
     Common Stock issuable in connection with the Merger for offering
     or sale in any jurisdiction, or (iv) any request by the SEC for
     amendment of the Joint Proxy Statement/Prospectus or comments
     thereon and responses thereto or requests by the SEC for
     additional information, in each case, whether orally or in
     writing.  If at any time prior to the Effective Time, CITATION or
     Cerner discovers any information relating to either party, or any
     of their respective Affiliates, officers or directors, that
     should be set forth in an amendment or supplement to the Joint
     Proxy Statement/Prospectus, so that such document would not
     include any misstatement of a material fact or omit to state any
     material fact necessary to make the statements therein, in light
     of the circumstances under which they were made, not misleading,
     the party that discovers such information shall promptly notify
     the other party hereto and an appropriate amendment or supplement
     describing such information shall be promptly filed with respect
     thereto, and with respect to the


<PAGE>                           A-22

     Registration Statement, as the case may be, with the SEC and, to the
     extent required by law or regulation, disseminated to the shareholders
     of CITATION.

          (b)  CITATION and Cerner shall cooperate with one another in (i)
     determining whether any other action by or in respect of, or
     filing with, any Governmental Entity is required, or any actions,
     consents, approvals or waivers are required to be obtained from
     parties to any material contracts, in connection with the
     consummation of the transactions contemplated hereby, (ii)
     seeking any such other actions, consents, approvals or waivers or
     making any such filings, furnishing information required in
     connection therewith and seeking promptly to obtain any such
     actions, consents, approvals or waivers, (iii) setting a mutually
     acceptable date for the CITATION Shareholders Meeting, and
     (iv) taking all lawful action to call, give notice of, convene
     and hold the CITATION Shareholders Meeting for the purpose of
     obtaining the requisite votes to approve and adopt this
     Agreement, the Merger and the other matters contemplated by this
     Agreement.  The Board of Directors of CITATION shall, subject to
     its fiduciary duties under applicable law, declare the
     advisability of and recommend adoption and approval of this
     Agreement, the Merger and the other matters contemplated by this
     Agreement by the shareholders of CITATION, and shall not, subject
     to its fiduciary duties under applicable law, withdraw, modify or
     materially qualify in any manner adverse to Cerner to such
     recommendation or take any action or make any statement in
     connection with the CITATION Shareholder Meeting materially
     inconsistent with such recommendation (any such withdrawal,
     modification, qualification or statement (whether or not
     required), an "Adverse Change in the CITATION Recommendation").

          (c)  Each party shall afford the other party reasonable
     opportunities to review any communication given by it to, and
     consult with each other in advance of any meeting or conference
     with, any Governmental Entity or, in connection with any
     proceeding by a private party, with any other Person, and to the
     extent permitted by the applicable Governmental Entity or other
     Person, give the other party the opportunity to attend and
     participate in such meetings and conferences, in each case in
     connection with the transactions contemplated hereby.

          (d)  Cerner and CITATION agree to use their respective reasonable
     best efforts to cause the shares of Cerner Common Stock to be
     issued to CITATION Shareholders upon conversion of shares of
     Common Stock in accordance with this Agreement, the Articles of
     Merger and the Certificate of Merger to be approved for listing
     upon issuance on the Nasdaq National Market.

     Section 7.3.   Public Announcements.
                    --------------------  Cerner and CITATION shall
use their reasonable best efforts to develop a joint
communications plan and each party shall use its reasonable best
efforts (i) to ensure that all press releases and other public
statements with respect to the transactions contemplated hereby
shall be consistent with such joint communications plan, and
(ii) unless otherwise required by applicable law or by
obligations pursuant to any rules of the Nasdaq National Market,
to consult with each other before issuing any press release or,
to the extent practical, otherwise making any public statement
with respect to this Agreement or the transactions contemplated
hereby.

     Section 7.4.   Access to Information; Notification of Certain
                    ----------------------------------------------
Matters.
-------
        (a)  From the date hereof until the Effective Time and subject to
     applicable law, CITATION shall (i) give to Cerner, its counsel,
     financial advisors, auditors and other authorized representatives
     reasonable access during normal business hours to the offices,
     properties, books, records, contracts, commitments, officers and
     employees and all other information concerning it and its
     business, properties, assets, condition (financial or otherwise)
     or prospects of such party, (ii) consistent with its legal
     obligations, furnish or make available to Cerner, its counsel,
     financial advisors, auditors and other authorized representatives
     such financial and operating data and other information as such
     Persons may reasonably request and (iii) instruct its employees,
     counsel, financial advisors, auditors and other authorized
     representatives to cooperate with the reasonable requests of
     Cerner in its investigation.  Any investigation pursuant to this
     Section 7.4 shall be conducted in such manner as not to interfere
     unreasonably with the conduct of the business of the other party.
     Unless otherwise required by law, each of Cerner and CITATION
     will hold, and will cause its respective officers, employees,
     counsel, financial advisors, auditors and other authorized
     representatives to hold, any nonpublic information obtained in
     any such

<PAGE>                              A-23

     investigation in confidence in accordance with the
     Confidentiality Agreement.  No information or knowledge obtained
     in any investigation pursuant to this Section 7.4 shall affect or
     be deemed to modify any representation or warranty made by any
     party hereunder.

          (b)  Each party hereto shall give prompt notice to each other
     party hereto of:

               (i)  the receipt by such party or any of such party's
          Subsidiaries of any notice or other communication from any Person
          alleging that the consent of such Person is or may be required in
          connection with the transactions contemplated by this Agreement;

              (ii) the receipt by such party or any of such party's
          Subsidiaries of any notice or other communication from any
          Governmental Entity in connection with any of the transactions
          contemplated by this Agreement;

              (iii)     such party's obtaining Knowledge of any actions, suits,
          claims, investigations or proceedings commenced, threatened
          against, relating to or involving or otherwise affecting either
          CITATION or Cerner, as the case may be, or any Subsidiary of
          either of them which relate to the consummation of the
          transactions contemplated by this Agreement; or

              (iv) such party's obtaining Knowledge of the occurrence, or
          failure to occur, of any event which occurrence or failure to
          occur will be likely to cause (A) any representation or warranty
          contained in this Agreement to be untrue or inaccurate in any
          material respect, or (B) any material failure of any party to
          comply with or satisfy any covenant, condition or agreement to be
          complied with or satisfied by it under this Agreement; provided,
          however, that no such notification shall limit or otherwise
          affect the representations, warranties, obligations or remedies
          of the parties to the conditions to the obligations of the
          parties hereunder.

     Section 7.5.   Further Assurances.
                    ------------------  At and after the Effective
Time, the officers and directors of the Surviving Corporation
will be authorized to execute and deliver, in the name and on
behalf of CITATION or Merger Sub, any deeds, bills of sale,
assignments or assurances and to take and do, in the name and on
behalf of CITATION or Merger Sub, any other actions and things to
vest, perfect or confirm of record or otherwise in the Surviving
Corporation any and all right, title and interest in, to and
under any of the rights, properties or assets of CITATION or
Merger Sub acquired or to be acquired by the Surviving
Corporation as a result of, or in connection with the Merger.

     Section 7.6.   Tax Treatment.
                    -------------

          (a)  Prior to the Effective Time, each party shall cooperate with
     the other party and shall use its reasonable best efforts to
     cause the Merger to qualify as a 368 Reorganization, and will not
     take any action reasonably likely to cause the Merger not so to
     qualify.  The Surviving Corporation shall not take any action
     after the Effective Time that would cause the Merger not to
     qualify a 368 Reorganization.

         (b)  Each party shall cooperate with the other party and shall

     use its reasonable best efforts to obtain the opinions referred
     to in Sections 8.2(b) and 8.3(b) and in connection therewith,
     each of Cerner and CITATION shall deliver to such counsel
     customary representation letters substantially in the forms
     attached hereto as Exhibit C

and Exhibit D (the "Cerner Representation Letter" and the "CITATION
Representation Letter", respectively) or otherwise in form and substance
reasonably satisfactory to such counsel.

     Section 7.7.   Affiliates.
                    ----------  Not less than 45 days prior to the
Effective Time, CITATION shall deliver to Cerner a letter
identifying all persons who, in the reasonable judgment of
CITATION, may be deemed at the time this Agreement is submitted
for adoption by the shareholders of CITATION, "affiliates" of
CITATION for purposes of Rule 145 under the Securities Act and
such list shall be updated as necessary to reflect changes from
the date hereof.  CITATION shall use reasonable best efforts to
cause each Person identified on such list to deliver to Cerner
not less than 10 days prior to the Effective Time, a written
agreement substantially in the form attached as Exhibit E

<PAGE>                       A-24

hereto (an "Affiliate Agreement"), which Affiliate Agreements shall
require compliance with Rule 145 under the Securities Act.

     Section 7.8.   Benefit Matters.
                    ---------------  Cerner and CITATION will work
together to transition CITATION employees to Cerner employee
benefit plans, as appropriate.

	Section 7.9.   Antitrust Matters.
                     -----------------  The parties hereto promptly
will complete all documents required to be filed with the Federal
Trade Commission and the Department of Justice in order to permit
the Merger and the transactions contemplated by this Agreement
and, together with the Persons who are required to join in such
filings, will file the same with the appropriate Governmental
Entities.  The parties hereto promptly will furnish all materials
thereafter required by any of the Governmental Entities having
jurisdiction over such filings and will take all reasonable
actions and file and use all reasonable efforts to have declared
effective or approved all documents and notifications with any
such Governmental Entities, as may be required under the HSR Act
for the consummation of the Merger.

     Section 7.10.  Exemption From Liability Under Section 16(b).
                    --------------------------------------------

          (a)  Provided that CITATION delivers to Cerner the Section 16
     Information with respect to CITATION prior to the Effective Time,
     the Board of Directors of Cerner, or a committee of Non-Employee
     Directors thereof (as such term is defined for purposes of Rule
     16b-3(d) under the Exchange Act), shall adopt a resolution in
     advance of the Effective Time providing that the receipt by the
     CITATION Insiders of Cerner Common Stock in exchange for shares
     of Common Stock, and of options to purchase Cerner Common Stock
     upon assumption and conversion by the Surviving Corporation of
     options to purchase Common Stock, in each case pursuant to the
     transactions contemplated hereby and to the extent such
     securities are listed in the Section 16 Information, are intended
     to be exempt from liability pursuant to Rule 16b-3 under the
     Exchange Act.

          (b)  "Section 16 Information" shall mean information accurate in
     all respects regarding the CITATION Insiders, the number of
     shares of Common Stock, or other CITATION equity securities,
     deemed to be beneficially owned by each such CITATION Insider and
     expected to be exchanged for Cerner Common Stock in connection
     with the Merger.

          (c)  "CITATION Insiders" shall mean those officers and directors
     of CITATION who are subject to the reporting requirements of
     Section 16(a) of the Exchange Act who are listed in the Section
     16 Information.

     Section 7.11.  Indemnification and Insurance.
                    -----------------------------

          (a)  The Certificate of Incorporation and By-Laws of Merger Sub
     shall contain provisions with respect to indemnification and
     exculpation similar to those set forth in the Articles of
     Incorporation and By-Laws of CITATION, which provisions Cerner
     shall not and shall cause Merger Sub not to amend, repeal or
     otherwise modify for a period of five (5) years from the
     Effective Time in any manner that would materially and adversely
     affect the rights thereunder of individuals who at the Effective
     Time were directors, officers, employees or agents of CITATION,
     unless such amendment, repeal or other modification is required
     by applicable law.

          (b)  From and after the Effective Time, Cerner and Merger Sub
     agree that they will indemnify and hold harmless each present
     director and officer of CITATION (when acting in such capacity)
     determined as of the Effective Time (the "Indemnified Parties"),
     against any costs or expenses (including reasonable attorneys'
     fees), judgments, fines, losses, claims, damages or liabilities
     (collectively, "Costs") incurred in connection with any claim,
     action, suit, proceeding or investigation whether civil,
     criminal, administrative or investigative, arising out of or
     pertaining to matters existing or occurring at or prior to the
     Effective Time, whether asserted or claimed prior to, at or after
     the Effective Time, to the fullest extent that CITATION would
     have been permitted under Missouri Law and its Articles of
     Incorporation or By-Laws in effect on the date of this Agreement
     to indemnify such person (and Cerner and Merger Sub shall also

<PAGE>                           A-25

     advance expenses as incurred to the fullest extent permitted
     under applicable Missouri Law and the Articles of Incorporation
     and the By-Laws of CITATION, provided that the person to whom
     expenses are advanced provides an undertaking to repay such
     advances if it is ultimately determined that such person is not
     entitled to indemnification).

          (c)  Any Indemnified Party wishing to claim indemnification under
     paragraph (b) of this Section 7.11, upon learning of any such
     claim, action, suit, proceeding or investigation, shall promptly
     notify Cerner thereof in writing, but the failure to so notify
     shall not relieve Cerner of any liability it may have to such
     Indemnified Party if such failure does not materially prejudice
     Cerner.  In the event of any such claim, action, suit, proceeding
     or investigation (whether arising before or after the Effective
     Time), (i) Cerner or Merger Sub shall have the right to assume
     the defense thereof, and Cerner shall not be liable to such
     Indemnified Parties for any legal expenses of other counsel or
     any other expenses subsequently incurred by such Indemnified
     Parties in connection with the defense thereof, except that if
     Cerner or Merger Sub elects not to assume such defense, or if
     there are any issues which raise material conflicts of interest
     between Cerner or Merger Sub and the Indemnified Parties, the
     Indemnified Parties may retain counsel reasonably satisfactory to
     Cerner, and Cerner or Merger Sub shall pay all reasonable fees
     and expenses of such counsel for the Indemnified Parties;
     provided, however, that Cerner shall be obligated pursuant to
     this paragraph (c) to pay for only one firm or counsel for all
     Indemnified Parties and, as applicable, for local counsel, and
     provided, however, the costs of more than one firm or counsel shall be
     paid if the Indemnified Parties cannot be represented by one firm or
     counsel because of a conflict of interest, (ii) the Indemnified
     Parties will cooperate in the defense of any such matter, and (iii)
     Cerner shall not be liable for any settlement effected without its
     prior written consent (which consent shall not be unreasonably
     withheld or delayed).

          (d)  For a period of five (5) years after the Effective Time and
     to the extent available, Cerner or Merger Sub shall maintain in
     effect policies of directors' and officers' liability insurance
     covering those persons who are currently covered by CITATION's
     directors' and officers' liability insurance policy on terms
     (including the amounts of coverage and the amounts of
     deductibles, if any) that are no less favorable to them in any
     material respect than the terms now applicable to them under
     CITATION's current insurance policies; provided that Cerner and
     Merger Sub shall not be required to pay an annual premium for
     such insurance in excess of 150% of the last annual premium paid
     prior to the date hereof, but in such case shall purchase as much
     coverage as possible for such amount.

          (e)  If Cerner or Merger Sub or any of their successors or
     assigns (i) shall consolidate with or merge into any other
     corporation or entity and shall not be the continuing or
     surviving corporation or entity in such consolidation or merger
     or (ii) shall transfer all or substantially all of its properties
     and assets to any individual, corporation or other entity, then
     and in each case, proper provisions shall be made so that the
     successors and assigns of Cerner or Merger Sub, as the case may
     be, shall assume all of the obligations set forth in this Section
     7.11; provided, that the failure to make such provisions shall
     not affect the validity of any such consolidation, merger or
     transfer.

          (f)  The provisions of this Section 7.11 are intended to be for
     the benefit of, and shall be enforceable by, each of the
     Indemnified Parties, their heirs and representatives.

          (g)  Notwithstanding the foregoing, neither Cerner nor Merger Sub
     shall have any obligation to indemnify or exculpate any officer
     or director or CITATION from liability to Cerner, Merger Sub or
     Cerner's stockholders for any acts related to or arising out of
     the Merger, this Agreement or the transactions contemplated
     hereby if and to the extent such person's conduct was finally
     adjudged to have been knowingly fraudulent, deliberately
     dishonest or willful misconduct.

<PAGE>                           A-26

                          ARTICLE VIII

                    CONDITIONS TO THE MERGER

     Section 8.1.   Conditions to the Obligations of Each Party.
                    -------------------------------------------  The
respective obligations of CITATION, Cerner and Merger Sub to
consummate the Merger are subject to the satisfaction or waiver
on or prior to the Closing Date of the following conditions:

          (a)  Shareholder Approval.
               --------------------  The CITATION Shareholder Approval
     shall have been obtained;

          (b)  Securities Laws.
               ---------------  (i) The Registration Statement shall have
     become effective in accordance with the provisions of the
     Securities Act, no stop order suspending the effectiveness of the
     Registration Statement shall have been issued by the SEC and no
     proceedings for that purpose shall have been initiated or
     threatened by the SEC and not concluded or withdrawn, (ii) all
     state securities or blue sky authorizations necessary to carry
     out the transactions contemplated hereby shall have been obtained
     and be in effect, and (iii)  the Nasdaq National Market shall
     have approved the listing of the Cerner Common Stock portion of
     the Merger Consideration, subject to notice of issuance;

          (c)  Antitrust.
               ---------  Any applicable waiting period under the HSR Act
     contemplated by Section 7.9 hereof shall have expired or been
     earlier terminated;

          (d)  Other Regulatory Approvals.
               --------------------------  Other than the filings provided
     for by Article II, all authorizations, consents, orders or
     approvals of, or declarations or filings with, or expirations of
     waiting periods imposed by, any Governmental Entity the failure
     of which to obtain would have a CITATION Material Adverse Effect,
     a Cerner Material Adverse Effect or a Surviving Corporation
     Material Adverse Effect, shall have been filed, occurred or been
     obtained; and

          (e)  No Injunctions or Restraints; Illegality.
               ----------------------------------------  No Laws shall
     have been adopted or promulgated, and no temporary restraining
     order, preliminary or permanent injunction or other order issued
     by a court or other Governmental Entity of competent jurisdiction
     shall be in effect, (i) having the effect of making the Merger
     illegal or otherwise prohibiting, enjoining or restraining
     consummation of the Merger or (ii) which otherwise would
     reasonably be expected to have a Surviving Corporation Material
     Adverse Effect after giving effect to the Merger; provided,
     however, that the provisions of this Section 8.1(e) shall not be
     available to any party whose failure to fulfill its obligations
     pursuant to Sections 7.1 and 7.2 shall have been the cause of, or
     shall have resulted in, such order or injunction.

     Section 8.2.   Conditions to the Obligations of Cerner and Merger
                    --------------------------------------------------
Sub.
---

The obligations of Cerner and Merger Sub to consummate the
Merger are subject to the satisfaction, or waiver by Cerner and
Merger Sub, on or prior to the Closing Date, of the following
further conditions:

          (a)  Representations and Covenants.
               -----------------------------  (i) CITATION shall have
     performed in all material respects all of its obligations
     hereunder required to be performed by it at or prior to the time
     of the filing of the Articles of Merger and the Certificate of
     Merger; (ii) the representations and warranties of CITATION in
     this Agreement that are qualified as to materiality, CITATION
     Material Adverse Effect or Surviving Corporation Material Adverse
     Effect shall be accurate, and any such representations and
     warranties that are not so qualified shall be accurate, in all
     material respects, as of the date of this Agreement and as of the
     Effective Time (except for representations and warranties that
     address matters only as of a specific date, in which case such
     representations and warranties qualified as to materiality,
     CITATION Material Adverse Effect or Surviving Corporation
     Material Adverse Effect shall be true and correct, and those not
     so qualified shall be true and correct in all material respects, on
     and as of such earlier date); and (iii) Cerner shall have received
     a certificate signed by the Chief Executive Officer or Chief
     Financial Officer of CITATION to the foregoing effect;

          (b)  Tax Opinion.
               -----------  Cerner shall have received an opinion of
     Stinson, Mag & Fizzell, P.C. in form and substance reasonably
     satisfactory to Cerner, on the basis of certain facts,
     representations and

<PAGE>                            A-27

     assumptions set forth in such opinion, dated as of the date of the
     filing of the Articles of Merger and the Certificate of Merger, to
     the effect that the Merger will qualify for federal income tax
     purposes as a 368 Reorganization and that each of Cerner, CITATION
     and Merger Sub will be a party to the reorganization within the
     meaning of Section 368(b) of the Code. In rendering such opinion,
     such counsel shall be entitled to rely upon representations of
     officers of Cerner, CITATION and Merger Sub;

          (c)  Employment Agreements.
               ---------------------  J. Robert Copper and Richard D. Neece
     shall have executed and delivered to Cerner employment agreements
     in a form mutually agreeable to such parties;

          (d)  Affiliate Agreements.
               --------------------  Cerner shall have received from each
     Person named in the letter referred to in Section 7.7 an executed
     copy of an Affiliate Agreement;

          (e)  Opinion of Counsel.
               ------------------  Cerner shall have received an opinion
     of Thompson Coburn LLP in substantially the form attached hereto
     as Exhibit H; and

          (f)  No Material Adverse Change.
               --------------------------  There shall have been no
     material adverse change in the financial condition, results of
     operations or cash flows or assets, liabilities, business or
     prospects of CITATION from March 31, 2000 through the Closing
     Date.

     Section 8.3.   Conditions to the Obligations of CITATION.
                    -----------------------------------------  The
obligations of CITATION to consummate the Merger are subject to
the satisfaction, or waiver by CITATION, on or prior to the
Closing Date, of the following further conditions:

          (a)  Representations and Covenants.
               -----------------------------  (i) Cerner shall have
     performed in all material respects all of its obligations
     hereunder required to be performed by it at or prior to the time
     of the filing of the Articles of Merger and the Certificate of
     Merger; (ii) the representations and warranties of Cerner and
     Merger Sub in this Agreement that are qualified as to
     materiality, Cerner Material Adverse Effect or Surviving
     Corporation Material Adverse Effect shall be accurate, and any
     such representations and warranties that are not so qualified
     shall be accurate, in all material respects, as of the date of
     this Agreement and as of the Effective Time (except for
     representations and warranties which address matters only as of a
     specific date, in which case such representations and warranties
     qualified as to materiality, Cerner Material Adverse Effect or
     Surviving Corporation Material Adverse Effect shall be true and
     correct, and those not so qualified shall be true and correct in
     all material respects, on and as of such earlier date); and
     (iii) CITATION shall have received a certificate signed by the
     Chief Executive Officer or Chief Financial Officer of Cerner and
     Merger Sub to the foregoing effect;

          (b)  Tax Opinion.
               -----------  CITATION shall have received an opinion of
     Thompson Coburn LLP in form and substance reasonably satisfactory
     to CITATION, on the basis of certain facts, representations and
     assumptions set forth in such opinion, dated as of the date of
     the filing of the Articles of Merger and the Certificate of
     Merger, to the effect that the Merger will qualify for federal
     income tax purposes as a 368 Reorganization and that each of
     Cerner, Merger Sub and CITATION will be a party to the
     reorganization within the meaning of Section 368(b) of the Code.
     In rendering such opinion, such counsel shall be entitled to rely
     upon representations of officers of Cerner, Merger Sub and
     CITATION;

          (c)  Employment Agreements.
               ---------------------  Cerner shall have executed and
     delivered employment agreements to J. Robert Copper and Richard
     D. Neece, in a form mutually agreeable to such parties;

          (d)  Opinion of Counsel.
               ------------------  CITATION shall have received an opinion
     of Stinson, Mag & Fizzell and/or the General Counsel of Cerner,
     in substantially the form attached hereto as Exhibit I; and

          (e)  No Material Adverse Change.
               --------------------------  There shall have been no
     material adverse change in the financial condition, results of
     operations or cash flows or assets, liabilities, business or
     prospects of Cerner from the date of the Cerner Balance Sheet
     through the Closing Date.

<PAGE>                               A-28

                           ARTICLE IX

                           TERMINATION

     Section 9.1.   Termination.
                    -----------  This Agreement may be terminated at
any time prior to the Effective Time by written notice by the
terminating party to the other party (except if such termination
is pursuant to Section 9.1(a)), notwithstanding approval thereof
by the shareholders of CITATION:

          (a)  by mutual written agreement of Cerner and CITATION;

          (b)  by either CITATION or Cerner, if

               (i)  the Merger shall not have been consummated by December 30,
          2000 (the "Expiration Date") unless the holders of Common Stock
          do not approve this Agreement by the Expiration Date, in which
          case this Agreement is terminable under Section 9.1(b)(iii);
          provided, however, that the right to terminate this Agreement
          under this Section 9.1(b)(i) shall not be available to any party
          whose breach of any provision of this Agreement has resulted in
          the failure of the Merger to occur on or before the Expiration
          Date;

               (ii) there shall be any Law that makes consummation of the Merger
          illegal or otherwise prohibited or any judgment, injunction,
          order or decree of any Governmental Entity having competent
          jurisdiction enjoining Cerner, CITATION or the Merger Sub from
          consummating the Merger is entered and such judgment, injunction,
          judgment or order shall have become final and nonappealable and,
          prior to such termination, the parties shall have used reasonable
          best efforts to resist, resolve or lift, as applicable, such law,
          regulation, judgment, injunction, order or decree; or

               (iii)  the holders of Common Stock do not approve this
          Agreement on or before the Expiration Date.

          (c)  by Cerner, (i) if there shall have occurred an Adverse
     Change in the CITATION Recommendation (or the Board of Directors
     of CITATION have resolved to take such action); (ii) if there
     shall have occurred a willful and material breach of Section 6.2
     by CITATION or any of its officers, directors, employees,
     advisors or agents; (iii) if a breach of any representation,
     warranty, covenant or agreement on the part of CITATION set forth
     in this Agreement shall have occurred that would cause the
     condition set forth in Section 8.2(a) not to be satisfied, and
     such condition shall be incapable of being satisfied by the
     Expiration Date; (iv) CITATION shall have failed to include in
     the Joint Proxy Statement/Prospectus the recommendation of the
     Board of Directors of CITATION in favor of the adoption and
     approval of this Agreement and the approval of the Merger;
     (v) the Board of Directors of CITATION shall have approved,
     endorsed or recommended any Acquisition Proposal of CITATION;
     (vi) a tender or exchange offer relating to securities of
     CITATION shall have been commenced and CITATION shall not have
     sent to its security holders, within ten business days after the
     commencement of such tender or exchange offer, a statement
     disclosing that CITATION recommends rejection of such tender or
     exchange offer; or (vii) CITATION or CITATION's Board of
     Directors or any committee thereof shall have resolved to do or
     permit any of the foregoing;

          (d)  by CITATION, if a breach of any representation, warranty,
     covenant or agreement on the part of Cerner set forth in this
     Agreement shall have occurred that would cause the condition set
     forth in Section 8.3(a) not to be satisfied, and such condition
     is incapable of being satisfied by the Expiration Date;

          (e)  by CITATION, pursuant to the provisions of Section 6.2(b);
     or

          (f)  automatically if the transactions contemplated herein are
     enjoined by a court of competent jurisdiction for a period
     extending beyond 90 days.

<PAGE>                                  A-29

     Section 9.2.   Effect of Termination.
                    ---------------------  If this Agreement is
terminated pursuant to Section 9.1, this Agreement shall
forthwith become void and there shall be no liability or
obligation on the part of Cerner or CITATION or their respective
officers or directors except with respect to the provisions of
Sections 9.2, 10.1, 10.4, 10.5, and 10.10 of this Agreement which
provisions shall remain in full force and effect and survive any
termination of this Agreement, and except that, notwithstanding
anything to the contrary contained in this Agreement, neither
Cerner nor CITATION shall be relieved or released from any
liabilities or damages arising out of its willful material breach
of this Agreement.  The Confidentiality Agreement shall survive
termination of this Agreement.

	Section 9.3.   Termination Fees; Other Fees.
                     ----------------------------

          (a)  CITATION agrees to pay to Cerner upon demand a termination
     fee of Six Hundred Thousand Dollars ($600,000) (the "Termination
     Fee") (i) if this Agreement is terminated pursuant to Section
     9.1(b)(iii) and the closing sale price per share of Cerner Common
     Stock, as reported by Nasdaq, is greater than $24.00 on at least
     10 of the last 20 trading days immediately preceding the date for
     the CITATION Shareholder Meeting as set forth in the definitive
     Joint Proxy Statement/Prospectus, or (ii) pursuant to Section
     6.2(b).  In the event of a termination of this Agreement pursuant
     to Section 6.2(b) or 9.1(b)(iii) of this Agreement, the payments
     provided under this Section 9.3(a) shall be the sole and
     exclusive remedy available to Cerner.

          (b)  Except as set forth in this Section 9.3, all
     Expenses incurred in connection herewith and the
     transactions contemplated hereby shall be paid by the party
     incurring such Expenses, whether or not the Merger is
     consummated.  All CITATION Expenses will be recorded prior
     to the Closing Date.  As used in this Agreement, "Expenses"
     includes all out-of-pocket expenses (including, without
     limitation, all fees and expenses of counsel, accountants,
     investment bankers, experts and consultants to a party
     hereto and its affiliates) incurred by a party or on its
     behalf in connection with or related to the authorization,
     preparation, negotiation, execution and performance of this
     Agreement and the transactions contemplated hereby,
     including the preparation, printing, filing and mailing of
     the Joint Proxy Statement/Prospectus and the solicitation of
     shareholder approval.

                            ARTICLE X

                          MISCELLANEOUS
                          -------------

     Section 10.1.  Notices.
                    -------  All notices and other communications
hereunder shall be in writing and shall be deemed duly given
(a) on the date of delivery if delivered personally, or by
telecopy or telefacsimile, upon confirmation of receipt, in each
case, if on a Business Day, and otherwise on the next Business
Day, (b) on the first service, (c) on the fifth Business Day
following the date of mailing if delivered by registered or
certified mail, return receipt requested, postage prepaid, or (d)
the second Business Day if delivered by nationally recognized
overnight courier.  All notices hereunder shall be delivered as
set forth below, or pursuant to such other instructions as may be
designated in writing by the party to receive such notice:

          if to the Surviving Corporation, to the address set
          forth below for Cerner and CITATION, including copies;

               if to Cerner and/or Merger Sub, to:

                    Cerner Corporation
                    2800 Rockcreek Parkway
                    Kansas City, Missouri 64117
                    Attention:  President

<PAGE>                          A-30

               with copies to:

                    Cerner Corporation
                    2800 Rockcreek Parkway
                    Kansas City, Missouri 64117
                    Attention:  General Counsel

                    Stinson, Mag & Fizzell, P.C.
                    1201 Walnut Street, Suite 2800
                    Kansas City, MO 64106
                    Attention:  Craig L. Evans

               if to CITATION to:

                    CITATION Computer Systems, Inc.
                    424 South Woods Mill Road
                    Suite 200
                    Chesterfield, Missouri 63017
                    Attention:  President

               with a copy to:

                    Thompson Coburn LLP
                    One Firstar Plaza
                    St. Louis, Missouri 63101
                    Attention:  Thomas A. Litz

     Section 10.2.  Amendments; No Waivers.
                    ----------------------

          (a)  Any provision of this Agreement may be amended or waived
     prior to the Effective Time if, and only if, such amendment or
     waiver is in writing and signed, in the case of an amendment, by
     Cerner and CITATION or in the case of a waiver, by the party
     against whom the waiver is to be effective; provided that after
     the CITATION Shareholder Approval, no such amendment or waiver
     shall, without the further approval of such shareholders, be made
     that would require such approval under any applicable law, rule
     or regulation.

          (b)  No failure or delay by any party in exercising any right,
     power or privilege hereunder shall operate as a waiver thereof
     nor shall any single or partial exercise thereof preclude any
     other or further exercise thereof or the exercise of any other
     right, power or privilege.  The rights and remedies herein
     provided shall be cumulative and not exclusive of any rights or
     remedies provided by law.

     Section 10.3.  Assignment.
                    ----------  Neither this Agreement nor any of the
rights, interests or obligations hereunder shall be assigned by
any of the parties hereto, in whole or in part (whether by
operation of law or otherwise), without the prior written consent
of the other party, and any attempt to make any such assignment
without such consent shall be null and void. Subject to the preceding
sentence, this Agreement will be binding upon, inure to the benefit of
and be enforceable by the parties and their respective successors and
assigns.

	Section 10.4.  Governing Law.
                     -------------  This Agreement shall be construed
in accordance with and governed by the internal laws of the State
of Delaware without regard to any principles of Delaware
conflicts or choice of law.

	Section 10.5.  Counterparts; Effectiveness.
                     ---------------------------  This Agreement may
be executed in one or more counterparts, all of which shall be
considered one and the same agreement and shall become effective
when one or more counterparts have been signed by each of the
parties and delivered to the other party, it being understood
that both parties need not sign the same counterpart.  This
Agreement shall become effective when each party hereto shall
have received counterparts hereof signed by all of the other
parties hereto.

<PAGE>                           A-31

	Section 10.6.  No Third Party Beneficiaries.
                     ----------------------------  This Agreement
shall be binding upon and inure solely to the benefit of each
party hereto, and nothing in this Agreement, express or implied,
is intended to or shall confer upon any other Person any right,
benefit or remedy of any nature whatsoever under or by reason of
this Agreement.

	Section 10.7.  Interpretation.
                     --------------  When a reference is made in this
Agreement to Sections, Exhibits or Schedules, such reference
shall be to a Section of or Exhibit or Schedule to this Agreement
unless otherwise indicated.  The table of contents and headings
contained in this Agreement are for reference purposes only and
shall not affect in any way the meaning or interpretation of this
Agreement.  Whenever the words "include," "includes" or
"including" are used in this Agreement, they shall be deemed to
be followed by the words "without limitation."

	Section 10.8.  Enforcement.
                     -----------  The parties agree that irreparable
damage would occur in the event that any of the provisions of
this Agreement were not performed in accordance with their
specific terms.  It is accordingly agreed that the parties shall
be entitled to specific performance of the terms hereof, this
being in addition to any other remedy to which they are entitled
at law or in equity.

	Section 10.9.  Entire Agreement.
                     ----------------  This Agreement (together with
the exhibits and schedules hereto) constitutes the entire
agreement between the parties with respect to the subject matter
hereof and supersedes all prior agreements and understandings,
both oral and written, between the parties with respect to the
subject matter hereof.

	Section 10.10. Severability.
                     ------------  If any term, provision, covenant or
restriction set forth in this Agreement is held by a court of
competent jurisdiction to be invalid, illegal, void or
unenforceable, the remainder of the terms, provisions, covenants
and restrictions set forth in this Agreement shall remain in full
force and effect and shall in no way be affected, impaired or
invalidated so long as the economic or legal substance of the
transactions contemplated hereby is not deemed by a party (acting
reasonably and in good faith) to be materially adverse to that
party.  Upon such a determination, the parties shall negotiate in
good faith to modify this Agreement so as to effect the original
intent of the parties as closely as possible in order that the
transactions contemplated hereby may be consummated as originally
contemplated to the fullest extent possible.

     IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed by their respective authorized
officers as of the day and year first above written.

                              CERNER CORPORATION


                              By:_/s/Marc G. Naughton________________
                                 Marc G. Naughton, Vice President and
					   Chief Financial Officer


                              CITATION COMPUTER SYSTEMS, INC.


                              By:_/s/J. Robert Copper_________________
                                 J. Robert Copper, Chairman and Chief
                                 Executive Officer


                              CERNER PERFORMANCE LOGISTICS, INC.


                              By:_/s/Marc G. Naughton__________________
                                 Name: Marc G. Naughton, Vice President and
                                 Chief Financial Officer


<PAGE>                               A-32

                         APPENDIX I

                         DEFINITIONS

     "Acquisition Proposal for CITATION" means any offer or
proposal for a merger, consolidation, share exchange,
business combination, reorganization, recapitalization,
issuance of securities, liquidation, dissolution, tender
offer or exchange offer or other similar transaction or
series of transactions involving, or any purchase of 10% or
more of the assets, or directly or indirectly acquires
beneficial ownership of securities representing, or
exchangeable for or convertible into, more than 10% of the
outstanding securities of any class of voting securities of
CITATION or in which CITATION issues securities representing
10% of the outstanding securities of any class of voting
securities of CITATION, other than the transactions
contemplated by this Agreement.

     "Affiliate" means, with respect to any Person, any
other Person, directly or indirectly, controlling,
controlled by, or under common control with, such Person.
For purposes of this definition, the term "control"
(including the correlative terms "controlling", "controlled
by" and "under common control with") means the possession,
direct or indirect, of the power to direct or cause the
direction of the management and policies of a Person,
whether through the ownership of voting securities, or
partnership or other ownership interests, by contract, or
otherwise.

     "Average Cerner Stock Price" means the average of the
closing sales price per share of Cerner Common Stock as
reported by NASDAQ on each of the 20 consecutive trading
days immediately preceding the third trading day prior to
the date of the determination.

     "Business Day" means any day other than a Saturday,
Sunday or one on which banks are authorized by law to close
in the State of Missouri.

     "Cerner Balance Sheet" means Cerner's audited balance
sheet dated January 1, 2000.

     "Cerner Common Stock" means the common stock of Cerner,
par value $.01 per share, including the associated rights
(the "Cerner Stock Purchase Rights") to purchase shares of
Series A Preferred Stock of Cerner pursuant to the Amended
and Restated Rights Agreement, dated as of March 12, 1999,
between Cerner and UMB Bank, n.a., as Rights Agent.  All
references in this Agreement to Cerner Common Stock shall be
deemed to include the Cerner Stock Purchase Rights.

     "Cerner Disclosure Schedule" means the schedule
delivered to CITATION by Cerner pursuant to Article III
hereof containing exceptions to the representations and
warranties of Cerner set forth in such Article III.

     "Cerner SEC Documents" means (i) Cerner's annual report
on Form 10-K for its fiscal year ended January 1, 2000 (the
"Cerner 10-K"), (ii) Cerner's quarterly report on
Form 10-Q (the "Cerner 10-Q") for its fiscal quarter ended
April 1, 2000, (iii) Cerner's proxy or information
statements relating to meetings of, or actions taken without
a meeting by, Cerner's stockholders held since May 28, 1999,
and (iv) all other reports, filings, registration statements
and other documents filed by it with the SEC since January
1, 1999.

     "CITATION Balance Sheet" means CITATION's draft audited
balance sheet relating to its fiscal year ended on March 31,
2000.

     "CITATION Disclosure Schedule" means the schedule
delivered to Cerner by CITATION pursuant to Article IV
hereof containing exceptions to the representations and
warranties of CITATION set forth in such Article IV.

     "CITATION Preferred Stock" means the preferred stock,
par value $.01 per share, of CITATION.

     "CITATION SEC Documents" means (i) CITATION's annual
report on Form 10-K for its fiscal year ended March 31, 1999
(the "CITATION 10-K"), (ii) CITATION's proxy or information
statements relating to meetings of,

<PAGE>                         A-33

or actions taken without a meeting by, CITATION's shareholders
held since August 19, 1999, and (iv) all other reports, filings,
registration statements and other documents filed by it with the SEC
since March 31, 1999.

     "Closing" means the closing of the Merger contemplated
in this Agreement.

     "Closing Date" means the date on which the Closing
occurs.

     "Code" means the Internal Revenue Code of 1986, as
amended.

     "Common Stock" means the common stock, par value $.01
per share, of CITATION.

     "Confidentiality Agreement" means the Confidentiality
Agreement by and between Cerner and CITATION attached hereto
as Exhibit J.

     "Copyrights" mean all copyrightable works in both
published works and unpublished works registered and
unregistered, including, without limitation, any software.

     "Exchange Act" means the Securities Exchange Act of
1934, as amended, and the rules and regulations promulgated
thereunder.

     "Exchange Agent" means UMB Bank, n.a., or any successor
exchange agent agreed upon by Cerner and CITATION.

     "Exchange Ratio" means 0.1695, such number may be
adjusted pursuant to Section 2.1(g).

     "Governmental Entity" means any federal, state or local
governmental authority, any transgovernmental authority or
any court, tribunal, administrative or regulatory agency or
commission or other governmental authority or agency,
domestic or foreign.

     "Joint Proxy Statement/Prospectus" means the joint
proxy statement/prospectus included in the Registration
Statement relating to the CITATION Shareholder Meeting,
together with any amendments or supplements thereto.

     "Knowledge" means, with respect to the matter in
question, if any of (i) in the case of Cerner or Merger Sub,
Zane Burke and Randy Sims, and (ii) in the case of CITATION,
the executive officers and directors of CITATION, in each
case after good faith due inquiry.

     "Law" means any federal, state, local, municipal,
foreign, international, multinational, or other judicial or
administrative order, judgment, decree, constitution,
statute, rule, regulation, treaty, ordinance or principle of
common law.

     "Lien" means, with respect to any asset, any mortgage,
lien, pledge, charge, security interest or encumbrance of
any kind in respect of such asset.

     "Marks" mean all fictional business names, trading
names, registered and unregistered trademarks, service
marks, and applications therefor as well as the goodwill of
the business associated therewith.

     "Material Adverse Effect" means a material adverse
effect on the financial condition, business, results of
operations or prospects of a Person and its Subsidiaries,
taken as a whole, but shall exclude any material adverse
effect arising out of any change or development relating to
(i) U.S. or global economic or industry conditions, (ii)
changes in U.S. or global financial markets or conditions,
and/or (iii) any generally applicable change in Law or GAAP
or interpretation of any thereof.  "Cerner Material Adverse
Effect" means a Material Adverse Effect in respect of
Cerner, "CITATION Material Adverse Effect" means a Material
Adverse Effect in respect of CITATION and "Surviving
Corporation Material Adverse Effect" means a Material
Adverse Effect in respect of the Surviving Corporation.

<PAGE>                              A-34

     "Patents" mean all patents, patent applications, and
inventions and discoveries that may be patentable.

     "Person" means an individual, a corporation, a limited
liability company, a partnership, an association, a trust or
any other entity or organization, including any Governmental
Entity.

     "Registration Statement" means the Registration
Statement on Form S-4 registering under the Securities Act
the Cerner Common Stock issuable in connection with the
Merger.

     "SEC" means the Securities and Exchange Commission.

     "Securities Act" means the Securities Act of 1933, as
amended, and the rules and regulations promulgated
thereunder.

     "Subsidiary" means, with respect to any Person, any
corporation or other entity of which securities or other
ownership interests having ordinary voting power to elect a
majority of the board of directors or other Persons
performing similar functions are directly or indirectly
owned by such Person.  "Cerner Subsidiary" means a
Subsidiary of Cerner.

     "Tax" or "Taxes" means any federal, state, county,
local or foreign taxes, charges, levies, imposts, duties,
other assessments or similar charges of any kind whatsoever,
including any interest, penalties and addition imposed
thereon or with respect thereto.

     "Trade Secrets" mean trade secrets (such as customer
information, technical and non-technical data, a formula,
pattern, compilation, program, device, method, technique,
drawing, process) and other confidential and proprietary
information concerning the products, processes, or services
of CITATION, including but not limited to:  computer
programs; unpatented or unpatentable inventions; ideas,
discoveries or improvements; know-how, procedures,
methodologies, machines, lectures, manuals, reports,
illustrations, plans, designs, proposals, programming aids,
flow charts, algorithms, schematics; marketing,
manufacturing, or organizational research and development
results and plans; business and strategic plans; sales
forecasts and plans; personnel information, including the
identity of employees of CITATION, their responsibilities,
competence, abilities, and compensation; pricing and
financial information; current and prospective customer
lists and information on customers or their employees;
information concerning purchases of major equipment or
property; and information about potential mergers or
acquisitions.

     "368 Reorganization" means a merger that qualifies as a
reorganization within the meaning of Section 368(a) of the
Code and the regulations promulgated thereunder.

     In addition to the definitions set forth above, each of
the following terms is defined in the Section set forth
opposite such term:

       TERMS                                     SECTIONS

       Adverse Change in the CITATION            7.2(b)
       Recommendation
       Affiliate Agreement                       7.7
       Agreement                                 Preambl
                                                 e
       Articles of Merger                        2.1(b)
       Cerner                                    Preambl
                                                 e
       Cerner Financial Statement                3.11
       Cerner Representation Letter              7.6(b)
       Cerner Return                             3.12
       Certificate of Merger                     2.1(b)
       Certificates                              2.3(a)
       CITATION                                  Preambl
                                                 e
       CITATION Employee Plans                   4.13(a)
       CITATION Financial Statements             4.7(a)

<PAGE>                              A-35

       CITATION Insiders                         7.10(c)
       CITATION Intellectual Property            4.16(b)
       CITATION Representation Letter            7.6(b)
       CITATION Returns                          4.12(a)
       CITATION Securities                       4.5(b)
       CITATION Shareholder Approval             Recital
                                                 s
       CITATION Shareholders Meeting             4.19(b)
       CITATION Stock Options                    4.5(a)
       CITATION Warrants                         4.5(a)
       Common Stock                              Recital
                                                 s
       Costs                                     7.11(b)
       Delaware Law                              2.1(a)
       Effective Time                            2.1(b)
       Environmental Laws                        4.17(b)
       ERISA                                     4.13(a)
       ERISA Affiliate                           4.13(a)
       Exchange Fund                             2.3(a)
       Expenses                                  9.3
       Expiration Date                           9.1(b)(
                                                 i)
       GAAP                                      3.5(d)
       HSR Act                                   3.3
       Indemnified Parties                       7.11(b)
       Merger                                    Recital
                                                 s
       Merger Consideration                      2.1(e)(
                                                 i)
       Merger Sub                                Preambl
                                                 e
       Missouri Law                              2.1(a)
       Multiemployer Plan                        4.13(b)
       Retirement Plan                           4.13(b)
       Section 16 Information                    7.10(b)
       Shareholder Agreement                     Recital
                                                 s
       Shares                                    Recital
                                                 s
       Stock Rights                              2.1(f)
       Superior Proposal                         6.2(b)
       Surviving Corporation                     2.1(a)

<PAGE>                                A-36





                                                          APPENDIX B

                [LETTERHEAD OF A.G. EDWARDS & SONS, INC.]




                              May 15, 2000




The Board of Directors
CITATION Computer Systems, Inc.
424 South Woods Mill Road
Suite 200
Chesterfield, MO  63017


Gentlemen:

You  have requested our opinion as to the fairness,  from  a
financial   point   of  view,  to  the   shareholders   (the
"Shareholders")  of the stock of CITATION Computer  Systems,
Inc.  ("CCS"  or the "Company") of the consideration  to  be
received   by   the  Shareholders  from  Cerner  Corporation
("Cerner") pursuant to the Agreement and Plan of Merger (the
"Agreement")  dated as of May 15, 2000 between the  Company,
Cerner  and  a  wholly-owned subsidiary of  Cerner  ("Merger
Sub").  Pursuant to the Agreement, 90% of the shares of  CCS
will  be exchanged for shares of Cerner at an exchange  rate
of 5.9 CCS shares for one share of Cerner common stock.  The
remaining 10% of the CCS shares will be exchanged for  $5.10
per  share.  After the exchange CCS shall be merged with and
into  Merger Sub (the "Merger").  As a result of the Merger,
the  separate  corporate existence of CCS  shall  cease  and
Merger  Sub  shall continue as a wholly-owned subsidiary  of
Cerner.   The  sum  of  such transactions  pursuant  to  the
Agreement is referred to as the "Transaction".

A.G.  Edwards & Sons, Inc. ("A.G. Edwards"), as part of  its
investment  banking business, is regularly  engaged  in  the
valuation  of businesses and their securities in  connection
with  mergers  and acquisitions, negotiated under  writings,
competitive biddings, secondary distributions of listed  and
unlisted  securities, private placements and valuations  for
estate,  corporate or other purposes.  We are not  aware  of
any   present  or  contemplated  relationship  between  A.G.
Edwards,  the  Company,  or  the  Company's  directors   and
officers  or  its  shareholders, or Cerner,  its  directors,
officers and shareholders, which in our opinion would affect
our ability to render a fair and independent opinion in this
matter.

In  connection  with  this opinion,  we  have,  among  other
things:

  i.    reviewed the draft Agreement dated May 10, 2000  and
        related documents;

  ii.   reviewed certain historical financial statements and
        financial projections for the Company and Cerner;

  iii.  discussed  with  the Company's management the nature
        of the negotiations of the terms of the Transaction;

  iv.   compared the relative value of the consideration  to
        be received   by   the   Company's  shareholders  to
        the  historical  public  market  value  relationship
        between CCS and Cerner stock;

  v.    held discussions with management of the Company  and
        Cerner  regarding  the  past  and  current  business
        operations, financial condition and future prospects
        of  the  Company  and  Cerner, including information
        relating to the strategic, financial and operational
        benefits anticipated from the Transaction;

  vi.   reviewed  the  industries  in  which the Company and
        Cerner operate;

<PAGE>                           B-1

CITATION Computer Systems, Inc.
May 15, 2000
Page 2


  vii.  reviewed    the  Company's  and  Cerner's   relative
        contributions   to   the  historical  and  projected
        combined  revenue, EBITDA, EBIT, net income and book
        value;

  viii. reviewed  the  pro  forma  financial  impact to  the
        Company's  shareholders  of  the  Transaction giving
        effect to certain cost saving synergies as estimated
        by the management of the Company and Cerner;

  ix.   compared  certain  financial  information   for  the
        Company  and  Cerner, including the valuation in the
        Transaction,  with  similar  information  and  stock
        market information for certain other  companies, the
        securities of which are  publicly traded;

  x.    compared  certain  financial  information  for  CCS,
        including  the  valuation  in  the Transaction, with
        similar information   for  certain  recent  selected
        business combinations  in the healthcare information
        technology ("IT") sector;

  xi.   compared the premium above current market value that
        the  consideration  represents  to  that   of  other
        premiums  received  in  other, selected transactions
        which we deemed similar; and

  xii.  completed  such  other studies an analyses  that  we
        considered appropriate.

In  preparing  our  opinion, A.G. Edwards  has  assumed  and
relied  upon, without independent verification, the accuracy
and  completeness  of  all financial and  other  information
publicly  available or that was supplied or  otherwise  made
available to us by the Company and Cerner.  We have not been
engaged to, and therefore we have not, verified the accuracy
or  completeness of any of such information.   A.G.  Edwards
has been informed and assumed that the financial projections
supplied  to, discussed with or otherwise made available  to
us  reflect  the  best  currently  available  estimates  and
judgments of the managements of the Company and Cerner as to
the expected future financial performance of the Company and
Cerner, in each case on a stand-alone basis and after giving
effect  to  the Transaction, including, without  limitation,
the  projected  cost  savings and other operating  synergies
resulting   from  the  Transaction  as  projected   by   the
managements of the Company and Cerner.  A.G. Edwards has not
independently verified such information or assumptions,  nor
do we express any opinion with respect thereto.  We have not
made ay independent valuation or appraisal of the assets  or
liabilities  of  the Company or Cerner,  nor  have  we  been
furnished with any such appraisals.  A.G. Edwards has relied
upon  the  assurances of the management of the  Company  and
Cerner that they are not aware of any facts that would  make
such information inaccurate or misleading.  A.G. Edwards  is
not  capable  of independently assessing the probability  of
success of new technology applications being pursued by  the
Company or Cerner.

In  performing  its  analyses, A.G.  Edwards  made  numerous
assumptions  with  respect to the healthcare  IT  sector  in
which  the Company and Cerner operate, general business  and
economic  conditions and government regulations,  which  are
beyond  the control of the Company and Cerner.  The analyses
performed by A.G. Edwards are not necessarily indicative  of
actual  values  or  actual  future  results,  which  may  be
significantly more or less favorable than suggested by  such
analyses.   Such analyses were prepared solely  as  part  of
A.G.  Edwards'  analysis of the fairness, from  a  financial
point of view, to the Shareholders, of the consideration  to
be received pursuant to the Agreement and are being provided
to  the Board of Directors of the Company in connection with
the delivery of this fairness opinion.

In rendering our opinion, A.G. Edwards has also assumed that
the  Transaction  will  be accounted  for  as  a  "purchase"
business  combination in accordance with Generally  Accepted
Accounting  Principles  and that  the  Transaction  will  be
consummated on the terms contained in the Agreement, without
any  waiver  of  any  material terms or  conditions  by  the
Company.

A.G.  Edwards'  opinion is necessarily  based  on  economic,
market  and  other  conditions as  in  effect  on,  and  the
information  made  available to us as of, the  date  hereof.
Our opinion as expressed herein, in any event, is limited to
the  fairness,  from  a  financial point  of  view,  to  the
Shareholders,  of the consideration to be  received  by  the
Shareholders pursuant to the Agreement.

<PAGE>                           B-2

CITATION Computer Systems, Inc.
May 15, 2000
Page 3

It  is  understood  that  this  letter  is  solely  for  the
confidential  use of the Board of Directors of the  Company.
This  opinion may not be reproduced, summarized,  described,
characterized, excerpted from, referred to or given  to  any
other  person  for  any purpose without  the  prior  written
consent  except  that this opinion may be  included  in  its
entirety  and  the  procedures  followed  in  rendering  the
opinion  may be summarized (each summary to be reviewed  and
approved  by  A.G.  Edwards) in any proxy  materials  to  be
distributed  to  the  Company's  shareholders  regarding   a
Transaction.

Based  upon and subject to the foregoing, it is our  opinion
that,  as  of  the  date  hereof, the  consideration  to  be
received  by  the Shareholders pursuant to the Agreement  is
fair, from a financial point of view.

                       Very truly yours,

                       A.G. EDWARDS & SONS, INC.




                       By:_/s/Douglas E. Reynolds__________
                       Douglas E. Reynolds
                       Managing Director-Investment Banking



<PAGE>                      B-3

                                                 APPENDIX C

                      SHAREHOLDER AGREEMENT
                      ---------------------

          SHAREHOLDER AGREEMENT (this "Agreement"), dated as of
May 15, 2000 among Cerner Corporation, a Delaware corporation
("Cerner"), and the shareholders of CITATION Computer Systems,
Inc., a Missouri corporation ("CITATION"), named on Schedule I
hereto (individually, a "Shareholder" and collectively, the
"Shareholders").

          WHEREAS, CITATION and Cerner Performance Logistics,
Inc., a Delaware corporation and a wholly-owned subsidiary of
Cerner ("Merger Sub"), propose to enter into an Agreement and
Plan of Merger dated as of the date hereof (as amended from time
to time, the "Merger Agreement"; capitalized terms used but not
defined herein shall have the meanings set forth in the Merger
Agreement) with Cerner which provides, among other things, that
CITATION will merge with and into Merger Sub (the "Merger"); and

          WHEREAS, as of the date hereof, each Shareholder owns
of record or beneficially the respective number of shares of
Common Stock set opposite such Shareholder's name on Schedule I
hereto; and

          WHEREAS, as an essential condition to the willingness
of Cerner to enter into the Merger Agreement, Cerner has
requested that each Shareholder agree, and in order to induce
Cerner to enter into the Merger Agreement, each Shareholder has
agreed, to enter into this Agreement with respect to (i) all the
shares of Common Stock owned beneficially and of record by such
Shareholder as of the date hereof or of which such Shareholder
may hereafter acquire record or beneficial ownership (the
"Shares") and (ii) any other securities owned of record or
beneficially by such Shareholder as of the date hereof or of
which such Shareholder may hereafter acquire ownership of record
or beneficially which may be voted by or at the direction or on
behalf of the Shareholder at any meeting of CITATION shareholders
or with respect to which action taken without a meeting may be
authorized by or at the direction or on behalf of such
Shareholder by written consent (the "Other Securities").

          NOW, THEREFORE, in consideration of the foregoing and
the mutual covenants and agreements contained herein and
intending to be legally bound hereby, the parties hereto agree as
follows:

                            ARTICLE I

                        VOTING AGREEMENT

          SECTION 1.1    Voting Agreement.
                         ----------------  Each Shareholder hereby
agrees that, with respect to the CITATION Shareholders Meeting and
any other meeting of CITATION shareholders or any action to be
taken by written consent, the Shareholder shall:

          (a)  appear in person or by proxy (or use its reasonable best
     efforts to cause the holder of record on any applicable record
     date to appear in person or by proxy) for the purpose of
     obtaining a quorum at the CITATION Shareholders Meeting and at
     any adjournment or postponement thereof;

          (b)  vote (or cause to be voted) the Shares and the Other
     Securities (or, as applicable, shall execute or cause to be
     executed written consents in respect of the Shares and the Other
     Securities) in favor of the approval and adoption of the Merger
     Agreement, the Merger and, any other transactions or matters
     contemplated by the Merger Agreement, and any actions required in
     furtherance thereof and hereof; and

          (c)  not encourage any holder of securities of CITATION to vote
     against the approval and adoption of the Merger Agreement, the
     Merger or any other transactions or matters contemplated by the
     Merger Agreement, and not take any action, or permit any action
     to be taken, that would reasonably be expected to impede,
     interfere, or be inconsistent with, delay, postpone, discourage,
     disparage or otherwise adversely affect, the Merger Agreement,
     the Merger, this Agreement and any other transactions or matters
     contemplated by the Merger Agreement, or a Shareholder's
     obligations hereunder, including, but not limited to, the
     obligations of each Shareholder to vote for the approval and
     adoption of the Merger

<PAGE>                             C-1

     Agreement, the Merger and any other transactions or matters
     contemplated by the Merger Agreement, and to use its reasonable
     best efforts to consummate and make effective the transactions
     contemplated by this Agreement, provided that nothing in this
     Section 1.1 shall limit any individual Shareholder who is a
     director of CITATION from exercising or performing any of such
     Shareholder's rights or duties solely in such Shareholder's
     capacity as a director of CITATION.

          SECTION 1.2    Irrevocable Proxy.
                         -----------------  In order to ensure that the
voting agreement set forth in Section 1.1 and the other
obligations of each Shareholder hereunder will be carried out,
each Shareholder hereby grants an irrevocable proxy, coupled with
an interest, in the form attached hereto as Exhibit A (the
"Irrevocable Proxy").  Such Shareholder hereby revokes all other
proxies and powers of attorney with respect to the Shares and the
Other Securities that such Shareholder may have heretofore
appointed or granted that would prevent such Shareholder from
performing its obligations hereunder, and no subsequent proxy or
power of attorney shall be given or written consent executed (and
if given or executed, shall not be effective) by such Shareholder
with respect thereto.  All authority herein conferred or agreed
to be conferred shall survive the death or incapacity of any
Shareholder and any obligation of such Shareholder under this
Agreement shall be binding upon the transferees, heirs, personal
representatives, successors and assigns of such Shareholder.

          SECTION 1.3    Evaluation of Investment.
                         ------------------------  Each Shareholder,
by reason of such Shareholder's knowledge and experience in
financial and business matters, is capable of evaluating the
merits and risks of the investment in the Cerner Common Stock
following the Merger, contemplated by the Merger Agreement.

          SECTION 1.4    Documents Delivered.
                         -------------------  Each Shareholder
acknowledges receipt of copies of the following documents:

          (a)  the Merger Agreement and all schedules and exhibits
     thereto;

          (b)  Cerner's Annual report on Form 10-K for the fiscal
     year ended January 1, 2000;

          (c)  Cerner's Proxy Statement dated April 17, 2000;

          (d)  each report filed with the Securities and Exchange
     Commission by Cerner on Forms 8-K and 10-Q since January 1,
     2000; and

          (e)  any other information requested by any Shareholder
     concerning an evaluation of an investment in Cerner Common Stock.

Each Shareholder also acknowledges that it possesses the
information relating to Cerner which such Shareholder deems
relevant to its investment in the Cerner Common Stock should the
Merger be consummated.

                           ARTICLE II

                       OPTION TO PURCHASE

          SECTION 2.1    Grant of Option.
                         ---------------  Each Shareholder hereby grants
to Cerner the right and option (the "Option") to purchase from
such Shareholder, at the times and on the terms and conditions
hereinafter set forth, all or part of the shares of Common Stock
set opposite such Shareholder's name on Schedule I hereto at the
purchase price determined as follows:  (a) with respect to 90% of
such shares for which Cerner is exercising this Option, the
Merger Consideration set forth in Section 2.1(e)(i)(A) of the
Merger Agreement, and (b) with respect to 10% of such shares for
which Cerner is exercising this Option, the Merger Consideration
set forth in Section 2.1(e)(i)(B) of the Merger Agreement.

          SECTION 2.2    Exercise of Option.
                         ------------------  The Option granted
hereunder shall be exercisable in whole or in part from time to
time by delivery of the following by Cerner to the a Shareholder
of:

<PAGE>                           C-2

          (a)  Written notice of exercise signed by Cerner which
     specifies the number of shares to be purchased; and

          (b)  Full payment for the shares, determined in
     accordance with Section 2.1, with respect to which such Option
     or portion thereof is thereby exercised.

          SECTION 2.3    Deliver of Shares.
                         -----------------  Exercises of this Option
shall be honored by the Shareholder delivering to Cerner, upon
receipt of the foregoing written notice and consideration, stock
certificates evidencing such shares, together with stock powers
executed by the Shareholder in blank.

                           ARTICLE III

                 REPRESENTATIONS AND WARRANTIES

          SECTION 3.1    Representations and Warranties of Each
                         --------------------------------------
Shareholder.
-----------  Except as set forth on the disclosure letter
attached hereto, each Shareholder represents and warrants to
Cerner as follows:

          (a)  Each Shareholder (if it is a corporation, general
     or limited partnership, limited liability company or other
     legal entity) is duly organized, validly existing and in good
     standing under the laws of the jurisdiction of its incorporation
     or organization.  Such Shareholder has the requisite power and
     authority (and if a natural person, the legal capacity) to execute
     and deliver this Agreement and to perform its obligations hereunder.
     The execution and delivery of this Agreement and the consummation of
     the transactions contemplated hereby have been duly authorized by
     such Shareholder and no other proceedings on the part of such
     Shareholder are necessary to authorize this Agreement and the
     consummation of the transactions contemplated hereby.  This
     Agreement has been duly executed and delivered by such
     Shareholder and, assuming that this Agreement constitutes a valid
     and binding agreement of Cerner, is a legal, valid and binding
     obligation of such Shareholder, enforceable against such
     Shareholder in accordance with its terms, except as such
     enforceability may be limited by bankruptcy, insolvency,
     reorganization, moratorium and similar laws, now or hereafter in
     effect, relating to or affecting the rights and remedies of
     creditors generally, and to general principles of equity
     (regardless of whether such enforceability is considered in a
     proceeding in equity or a law) and to general principles
     governing the duties of fiduciaries.

           (b)  The execution and delivery of this Agreement by such
     Shareholder do not, and the performance of this Agreement by such
     Shareholder will not conflict with, result in any breach of or
     constitute a default (or an event that with notice or lapse of
     time or both would become a default) under, or give to others any
     rights of termination, amendment, acceleration or cancellation
     of, or require payment under, or result in the creation of any
     Encumbrances (as defined below) on any of the assets of such
     Shareholder pursuant to any contract or other instrument to which
     such Shareholder is a party or by which such Shareholder or any
     of such Shareholder's assets are bound, except for any thereof
     that would not reasonably be expected to materially impair the
     ability of such Shareholder to perform such Shareholder's
     obligations hereunder or to consummate the transactions
     contemplated hereby.

          (c)  The execution and delivery of this Agreement by such
     Shareholder do not, and the performance of this Agreement by such
     Shareholder will not, require such Shareholder to obtain any
     consent, approval, authorization or permit of, or to make any
     filing with or notification to, any Governmental Entity based on
     any federal, state, local or foreign law, statute, ordinance,
     rule, regulation, permit, injunction, writ, judgment, decree or
     order (collectively, "Laws") of any Governmental Entity, except
     (i) pursuant to the Exchange Act, the Securities Act and the HSR
     Act; and (ii) where the failure to obtain such consents,
     approvals, authorizations or permits, or to make such filings or
     notifications, could not reasonably be expected to materially
     impair the ability of such Shareholder to perform such
     Shareholder's obligations hereunder or to consummate the
     transactions contemplated hereby.

          (d)  There is no suit, action, investigation or proceeding
     pending or, to the knowledge of such Shareholder, threatened
     against such Shareholder at law or in equity before or by any
     Governmental Entity that would reasonably be expected to
     materially impair the ability of such Shareholder to perform such
     Shareholder's obligations hereunder or to consummate the
     transactions contemplated hereby.

<PAGE>                        C-3

          (e)  Such Shareholder owns beneficially and of record the shares
     of Common Stock set forth opposite such Shareholder's name on
     Schedule I hereto (the "Existing Shares").  Except as set forth
     on Schedule I, the Existing Shares constitute all the shares of
     Common Stock owned of record or beneficially by such Shareholder.
     Except as set forth on Schedule I, such Shareholder has sole
     voting power, sole power of disposition and all other Shareholder
     rights with respect to all the Existing Shares, with no
     restrictions, other than pursuant to applicable securities laws,
     on such Shareholder's rights of disposition pertaining thereto.
     Such Shareholder owns options or warrants to purchase or other
     securities convertible or exchangeable into or exercisable for
     the number of shares of such Common Stock set forth opposite such
     Shareholder's name on Schedule I hereto (collectively, the
     "Derivative Securities").  None of the Existing Shares or
     Derivative Securities is subject to (i) any right of first
     refusal or first offer, (ii) right to purchase, acquire or vote,
     or (iii) proxy or power of attorney, except in the case of clause
     (ii) or (iii) any rights created by this Agreement.  Such
     Shareholder has good and valid title to all the Existing Shares,
     free and clear of all Encumbrances (other than any Encumbrance
     created by this Agreement).

          (f)  Such Shareholder (i) is not a party to any agreement,
     arrangement or understanding with respect to voting, holding or
     disposing of any Shares, Other Securities, shares of Common Stock
     or the shares of Cerner Common Stock, either as of the date
     hereof or at any time in the future, and (ii) is not a member of
     a "group" within the meaning of Section 13(d)(3) of the Exchange
     Act and Rule 13d-5(b) thereunder, with respect to Shares, Other
     Securities, shares of Cerner Common Stock, except for this
     Agreement.

                           ARTICLE IV

                  COVENANTS OF THE SHAREHOLDER

          SECTION 4.1    No Solicitation.
                         ---------------  Each Shareholder and its
Representatives shall immediately cease and cause to be
terminated all existing discussions or negotiations to which the
Shareholder or its officers, directors, employees, agents,
accountants, counsel, advisors or consultants (collectively,
"Representatives") are a part relating to an Acquisition Proposal
for CITATION with any parties conducted heretofore.  From the
date hereof until the Effective Time or, if earlier, the
termination of the Merger Agreement pursuant to Article IX
thereof, each Shareholder shall not, whether directly or
indirectly through Representatives or other intermediaries, and
will instruct such Shareholder's Representatives not to, whether
directly or indirectly through Representatives or other
intermediaries, initiate, solicit or encourage (including by way
of furnishing information or assistance), or take any other
action to facilitate, any inquiries or the making of any proposal
regarding a potential Acquisition Proposal for CITATION or any
transaction referred to in Section 6.2, or enter into or maintain
discussions or negotiate with any person regarding, in
furtherance of or relating to such inquiries or the making of a
proposal regarding or consummation of an Acquisition Proposal for
CITATION, or agree to or endorse any Acquisition Proposal for
CITATION, or disclose any non-public information relating to
CITATION to any person that has made or may reasonably be
expected to make a proposal regarding an Acquisition Proposal for
CITATION or that has advised CITATION that it is or may be
interested in making a proposal regarding an Acquisition Proposal for
CITATION, or authorize or permit any of such Shareholder's
Representatives to take any such action, and each Shareholder
shall use such Shareholder's reasonable best efforts to cause
such Shareholder's Representatives not to take any such action,
and each Shareholder shall promptly notify Cerner if any such
inquiries or proposals are made regarding a potential Acquisition
Proposal for CITATION, and each Shareholder shall promptly inform
Cerner as to the terms and details of any such inquiry or
proposal (including the identity of the true party in interest
making such inquiry or proposal) and, if in writing, promptly
deliver or cause to be delivered to Cerner a copy of such inquiry
or proposal, and each Shareholder shall keep Cerner informed, on
a current basis, of the status, terms and details of any such
inquiries or such proposals.  Anything in this Section 4.1 to the
contrary notwithstanding, nothing in this Section 4.1 shall limit
any individual Shareholder who is also a director of the
CITATION, from exercising or performing any of such Shareholder's
rights or duties solely in such Shareholder's capacity as a
director of the CITATION.

     Further Assurances.
     ------------------  Each Shareholder agrees to use
     such Shareholder's reasonable best efforts to take, or
     cause to be taken, all appropriate action, and to do,
     or cause to be done, all things necessary, proper or
     advisable under applicable laws and regulations to
     consummate and make effective the transactions
     contemplated by this Agreement, including, but not
     limited to, the Merger or the transactions contemplated
     by the Merger Agreement.  If any further action is

<PAGE>                           C-4

     necessary or desirable to carry out the purposes of
     this Agreement, such Shareholder shall use such
     Shareholder's reasonable best efforts to take all such
     action as promptly as practicable.

                               ARTICLE V

                               SURVIVAL

          SECTION 5.1    Survival.
                         --------  All provisions of this Agreement shall
survive any termination of the Merger Agreement and shall remain
in full force and effect, except as otherwise provided in
Sections 5.2 and 5.3.

          SECTION 5.2    Termination.
                         -----------  Articles I, II, III and IV shall
terminate upon any termination of the Merger Agreement in
accordance with Article IX thereof.

          SECTION 5.3    Effect of Termination.
                         ---------------------  In the event that any part
of this Agreement shall terminate pursuant to this Article V,
such part of this Agreement shall thereafter be void and the
parties hereto shall have no further rights or obligations with
respect thereto, except as a result of any prior breach thereof.

                           ARTICLE VI

                           DEFINITIONS

          SECTION 6.1    Definitions.
                         -----------  For purposes of this Agreement:

          (a)  "Beneficially own" or "beneficial ownership" with respect to
     any securities shall mean having "beneficial ownership" of such
     securities (as determined pursuant to Rule 13d-3 under the Exchange Act),
     including pursuant to any agreement, arrangement or understanding,
     whether or not in writing. Securities beneficially owned by one Person
     shall include securities beneficially owned by all other Persons with
     whom such Person would constitute a "group" within the meaning of
     Section 13(d)(3) of the Exchange Act and Rule 13d-5(b) thereunder.

          (b)  "Person" shall mean an individual, corporation, partnership,
     joint venture, association, trust, unincorporated organization or
     other entity.

          (c)  "Encumbrance" means any pledge, security interest, lien,
     claim, encumbrance, mortgage, charge, hypothecation, option,
     right of first refusal or offer, community property right, other
     marital right, preemptive right, voting agreement, voting trust,
     proxy, power of attorney, escrow, option, forfeiture, penalty,
     action at law or in equity, security agreement, shareholder
     agreement or other agreement, arrangement, contract, commitment,
     understanding or obligation, or any other restriction,
     qualification or limitation on the use, transfer, right to vote,
     right to dissent, and seek appraisal, receipt of income or other
     exercise of any attribute of ownership, except for those which do
     not or could not reasonably be expected to, individually or in
     the aggregate, materially impair the ability of such Shareholder
     to perform such Shareholder's obligations hereunder or to
     consummate the transactions contemplated hereby.

                           ARTICLE VII

                          MISCELLANEOUS

          SECTION 7.1    Severability.
                         ------------  If any term or other provision of
this Agreement is invalid, illegal or incapable of being enforced
by any rule of law, or public policy, all other conditions and
provisions of this Agreement shall nevertheless remain in full
force and effect so long as the economic or legal substance of
this Agreement is not affected in any manner materially adverse
to any party.  Upon such determination that any term or other
provision is invalid, illegal or incapable of being enforced, the
parties hereto shall negotiate in good faith to modify this
Agreement so as to effect the original intent of the parties as
closely as possible in a mutually acceptable manner in order that
the terms of this Agreement remain as originally contemplated to
the fullest extent possible.

<PAGE>                                 C-5

          SECTION 7.2    Entire Agreement.
                         ----------------  This Agreement constitutes the
entire agreement between Cerner and each Shareholder with respect
to the subject matter hereof and supersedes all prior agreements
and understandings, both written and oral, between Cerner and
such Shareholder with respect to the subject matter hereof.

          SECTION 7.3    Counterparts.
                         ------------  This Agreement may be executed and
delivered (including by facsimile transmission) in one or more
counterparts, and by the different parties hereto in separate
counterparts, each of which when executed and delivered shall be
deemed to be an original but all of which taken together shall
constitute one and the same instrument.

          SECTION 7.4    Assignment.
                         ----------  Neither this Agreement nor any rights
or interests hereunder shall be assigned by any Shareholder
(whether by operation of law or otherwise) without the prior written consent
of Cerner, except that any Shareholder may transfer the Shares or Other
Securities subject to the Voting Agreement set forth in Section 1.1 hereof
and the Irrevocable Proxy attached hereto as Exhibit A.  Cerner may assign,
in its sole discretion, its rights hereunder to any direct or indirect
wholly owned subsidiary or affiliate of Cerner, but no such
assignment shall relieve Cerner of its obligations hereunder if
such assignee does not perform such obligations.

          SECTION 7.5    Amendments.
                         ----------  This Agreement may not be amended,
supplemented, waived or otherwise modified or terminated, except
upon the execution and delivery of a written agreement executed
by the parties hereto.

          SECTION 7.6    Notices.
                         -------  All notices, requests, claims, demands
and other communications hereunder shall be in writing and shall
be given (and shall be deemed to have been duly received if so
given) by hand delivery, facsimile transmission, mail (registered
or certified mail, postage prepaid, return receipt requested), or
courier service providing proof of delivery.  All communications
hereunder shall be delivered to the respective parties at the
following addresses:

               If to Cerner and/or Merger Sub, to:

                    Cerner Corporation
                    2800 Rockcreek Parkway
                    Kansas City, Missouri 64117
                    Attention:  President

               with copies to:

                    Cerner Corporation
                    2800 Rockcreek Parkway
                    Kansas City, Missouri 64117
                    Attention:  General Counsel

                    Stinson, Mag & Fizzell, P.C.
                    1201 Walnut Street, Suite 2800
                    Kansas City, MO 64106
                    Attention:  Craig L. Evans

               If to Shareholder, in accordance with the
               information set forth on Schedule I hereto.

               with copies to:

                    CITATION, Inc.
                    424 South Woods Mill Road
                    Suite 200
                    Chesterfield, Missouri 63017
                    Attention:  President

<PAGE>                            C-6

                    Thompson Coburn LLP
                    One Firstar Plaza
                    St. Louis, Missouri 63101
                    Attention:  Thomas A. Litz

or to such other address as the person to whom notice is given
may have previously furnished the others in writing in the manner
set forth above.

          SECTION 7.7    No Third Party Beneficiaries.
                         ----------------------------  This Agreement is
not intended to be for the benefit of, and shall not be enforceable by,
any person or entity not a party hereto.

          SECTION 7.8    Specific Performance.
                         --------------------  Each of the parties hereto
acknowledges that a breach by it of any agreement contained in
this Agreement may cause the other party to sustain damage for
which it may not have an adequate remedy at law for money
damages, and therefore each of the parties hereto agrees that in
the event of any such breach the aggrieved party may be entitled
to the remedy of specific performance of such agreement and
injunctive and other equitable relief in addition to any other
remedy to which it may be entitled, at law or in equity.

          SECTION 7.9    Remedies Cumulative.
                         -------------------  All rights, powers and
remedies provided under this Agreement or otherwise available in
respect hereof at law or in equity shall be cumulative and not
alternative, and the exercise of any thereof by any party shall
not preclude the simultaneous or later exercise of any other such
right, power or remedy by such party.

          SECTION 7.10   No Waiver.
                         ---------  The failure of any party hereto to
exercise any right, power or remedy provided under this Agreement
or otherwise available in respect hereof at law or in equity, or
to insist upon strict compliance by any other party hereto with
its obligations hereunder, and any custom or practice of the
parties at variance with the terms hereof, shall not constitute a
waiver by such party of its right to exercise any such or other
right, power or remedy or to demand such compliance.

          SECTION 7.11   Governing Law.
                         -------------  This Agreement shall be governed
by, and construed in accordance with, the laws of the State of
Missouri, without giving effect to the principles of conflicts of
law thereof.

          SECTION 7.12   Waiver of Jury Trial.
                         --------------------  EACH OF CERNER AND EACH
SHAREHOLDER HEREBY IRREVOCABLY WAIVES ALL RIGHT TO TRIAL BY JURY
IN ANY ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON
CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THIS
AGREEMENT OR THE ACTIONS OF PARENT OR SUCH SHAREHOLDER IN THE
NEGOTIATION, ADMINISTRATION, PERFORMANCE AND ENFORCEMENT THEREOF.

           SECTION 7.13   Descriptive Headings.
                          --------------------  The descriptive headings
used herein are inserted for convenience of reference only and
are not intended to be part of or to affect the meaning or
interpretation of this Agreement.

<PAGE>                                C-7

          IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed as of the date first above written.

                                    CERNER CORPORATION


                                    By:_/s/Zane Burke_____________
                                       Name:  Zane Burke
                                       Title:  Vice President


                                       _/s/Richard D. Neece_______
                                       Shareholder


                                       _/s/J. Robert Copper_______
                                       Shareholder


                                       _/s/Larry Marcus___________
                                       Shareholder


                                       _/s/David T. Pieroni_______
                                       Shareholder


                                       CFB VENTURE FUND I, INC.
                                       ---------------------------
                                       Shareholder
                                       By:_/s/James F. O'Donnell__
                                       Chairman and CEO

                                       _/s/Fred L. Brown__________
                                       Shareholder

<PAGE>                        C-8


               SCHEDULE 1 - SHAREHOLDER AGREEMENT

<TABLE>
                                      Other
  Name of                           Securities
Shareholder          Shares Owned     Owned       Address for Notices
-----------          ------------     -----       -------------------

<C>                  <S>              <S>         <S>
J. Robert Copper     310,511          205,000     7500 Oxford Drive
                                                  Clayton, MO  63105-2808

Richard D. Neece     107,000          135,000     9966 Old Chatham Road
                                                  St. Louis, MO  63124

James F. O'Donnell   643,229           12,000     12312 Borcherding Lane
                                                  Des Peres, MO 63131

David T. Pieroni      23,968           22,000     25 Briarcliff
                                                  Ladue, MO  63124-1761

Fred L. Brown         36,164           22,000     14319 Manderleigh Woods Drive
                                                  Town & Country, MO  63017

Larry D. Marcus       12,418           15,000     248 Gay Avenue
                                                  Clayton, MO  63105

</TABLE>

_______________________________
1 Mr. O'Donnell beneficially owns 636,229 shares of Company
  Common Stock through CFB Venture Fund I, Inc. ("CFB"), a
  subsidiary of Commerce Bancshares, Inc. ("CBI").  Mr.
  O'Donnell is the Chairman of CFB. Mr. O'Donnell may be deemed
  to share voting and investment power over those shares with
  CBI.

<PAGE>                              C-9


                                                       APPENDIX D



Section 351.455, RSMo

Shareholder who objects to merger may demand value of shares,
when.--

     1.  If a shareholder of a corporation which is a party to a
merger or consolidation shall file with such corporation, prior
to or at the meeting of shareholders at which the plan of merger
or consolidation is submitted to a vote, a written objection to
such plan of merger or consolidation, and shall not vote in favor
thereof, and such shareholder, within twenty days after the
merger or consolidation is effected, shall make written demand on
the surviving or new corporation for payment of the fair value of
his shares as of the day prior to the date on which the vote was
taken approving the merger or consolidation, the surviving or new
corporation shall pay to such shareholder, upon surrender of his
certificate or certificates representing said shares, the fair
value thereof.  Such demand shall state the number and class of
the shares owned by such dissenting shareholder.  Any shareholder
failing to make demand within the twenty day period shall be
conclusively presumed to have consented to the merger or
consolidation and shall be bound by the terms thereof.

     2.  If within thirty days after the date on which such
merger or consolidation was effected the value of such shares is
agreed upon between the dissenting shareholder and the surviving
or new corporation, payment therefor shall be made within ninety
days after the date on which such merger or consolidation was
effected, upon the surrender of his certificate or certificates
representing said shares.  Upon payment of the agreed value the
dissenting shareholder shall cease to have any interest in such
shares or in the corporation.

     3.  If within such period of thirty days the shareholder and
the surviving or new corporation do not so agree, then the
dissenting shareholder may, within sixty days after the
expiration of the thirty day period, file a petition in any court
of competent jurisdiction within the county in which the
registered office of the surviving or new corporation is
situated, asking for a finding and determination of the fair
value of such shares, and shall be entitled to judgment against
the surviving or new corporation for the amount of such fair
value as of the day prior to the date on which such vote was
taken approving such merger or consolidation, together with
interest thereon to the date of such judgment.  The judgment
shall be payable only upon and simultaneously with the surrender
to the surviving or new corporation of the certificate or
certificates representing said shares.  Upon the payment of the
judgment, the dissenting shareholder shall cease to have any
interest in such shares, or in the surviving or new corporation.
Such shares may be held and disposed of by the surviving or new
corporation as it may see fit.  Unless the dissenting shareholder
shall file such petition within the time herein limited, such
shareholder and all persons claiming under him shall be
conclusively presumed to have approved and ratified the merger or
consolidation, and shall be bound by the terms thereof.

     4.  The right of a dissenting shareholder to be paid the
fair value of his shares as herein provided shall cease if and
when the corporation shall abandon the merger or consolidation.

(L. 1943 p. 410  71)

<PAGE>


                    CITATION COMPUTER SYSTEMS, INC.

           Special Meeting of Shareholders, August 17, 2000

      THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

     The  undersigned  hereby  nominates,  constitutes  and   appoints
Richard D.  Neece  and  J.  Robert  Copper  (or  such  person  as   is
designated by the Board of  Directors  of  CITATION Computer  Systems,
Inc. (the  "Company")) (the  "Proxies"),  or either of them (with full
power to act alone),  true and lawful attorney(s), with full power  of
substitution, for the undersigned and in the name, place and stead  of
the  undersigned  at the Special Meeting of Shareholders to be held at
11 South Meramec, Clayton, Missouri at 10:00 a.m., local time,  August
17, 2000, and any adjournments or postponements thereof.

     THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR THE FOLLOWING:

     1.   APPROVAL OF ACQUISITION PROPOSAL

          Proposal  to  adopt  and  approve  the  Agreement and Plan of
          Reorganization,  dated  May   15,  2000, by  and among Cerner
          Corporation,  Cerner Performance  Logistics,  Inc.,  and  the
          Company,  as  described    in   the      accompanying   Proxy
          Statement/Prospectus   dated July 6, 2000.

              ___ FOR       ___ AGAINST     ____ ABSTAIN

     2.   In  their discretion, on such other business as may properly
          come before the meeting (the Board of Directors is not aware
          of  any matter other than the above proposal which is to  be
          presented for action at the Special Meeting).



                (Please Sign and Date on Reverse Side)

<PAGE>

                      (Continued from other side)

                   PLEASE SIGN AND RETURN PROMPTLY.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED
HEREIN BY THE SHAREHOLDER.  IF NO DIRECTION IS GIVEN, THIS PROXY  WILL
BE   VOTED  FOR  THE  APPROVAL  OF  THE  ACQUISITION  PROPOSAL.    THE
UNDERSIGNED ACKNOWLEDGES RECEIPT OF THE NOTICE OF SPECIAL MEETING  AND
THE PROXY STATEMENT/PROSPECTUS DATED JULY 6, 2000.

(Please sign, date, and return this proxy form exactly as your name or
names appear below whether or not you plan to attend the meeting.)



                                            ___ Please check this  box
                                                if  you plan to attend
                                                the Special Meeting.

                                   Date_________________________, 2000

                                   Signature(s):______________________

                       		     ___________________________________

                                   ___________________________________
                                    Title or Authority (if applicable)

                                   Please  sign your name here exactly
                                   as it appears hereon.  Joint owners
                                   should each sign.  When signing  as
                                   an        attorney,       executor,
                                   administrator,  trustee,  guardian,
                                   corporate officer or other  similar
                                   capacity,  so  indicate.   If   the
                                   owner   is   a   corporation,    an
                                   authorized officer should sign  for
                                   the  corporation and state  his  or
                                   her  title.   This Proxy  shall  be
                                   deemed valid for all shares held in
                                   all  capacities that they are  held
                                   by the signatory.




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