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                                                                    EXHIBIT 3.22
                        HEALTH DATA SCIENCES CORPORATION

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                                RESTATED BY-LAWS

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                                   ARTICLE I
                                    OFFICES

         Section 1. The registered office shall be in the City of Wilmington,
County of New Castle, State of Delaware.

         Section 2. The corporation may also have offices at such other places
both within and without the State of Delaware as the board of directors may from
time to time determine or the business of the corporation may require.



                                   ARTICLE II
                             MEETING OF STOCKHOLDERS

         Section 1. All meetings of the stockholders for the election of
directors shall be held in the City of San Bernardino, State of California, at
such place as may be fixed from time to time by the board of directors, or at
such other place either within or without the State of Delaware as shall be
designated from time to time by the board of directors and stated in the notice
of the meeting. Meetings of stockholders for any other purpose may be held at
such time and place, within or without the State of Delaware, as shall be
stated in the notice of the meeting or in a duly executed waiver of notice 
thereof.



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         Section 2. Annual meetings of stockholders, commencing with the year
1984, shall be held on the twenty-eighth day of February if not a legal holiday,
and if a legal holiday, then on the next secular day following, at 10:00 a.m.,
or at such other date and time as shall be designated from time to time by the
board of directors and stated in the notice of the meeting, at which they shall
elect by a plurality vote a board of directors, and transact such other business
as may properly be brought before the meeting.

         Section 3. Written notice of the annual meeting stating the place, date
and hour of the meeting shall be given to each stockholder entitled to vote at
such meeting not less than ten (10) nor more than sixty (60) days before the
date of the meeting.

         Section 4. The officer who has charge of the stock ledger of the
corporation shall prepare and make, at least ten (10) days before every meeting
of stockholders, a complete list of stockholders entitled to vote at the
meeting, arranged in alphabetical order, and showing the address of each
stockholder and the number of shares registered in the name of each stockholder.
Such list shall be open to the examination of any stockholder, for any purpose
germane to the meeting, during ordinary business hours, for a period of at least
ten (10) days prior to the meeting, either at a place within the city where the
meeting is to be held, which place shall be specified in the notice of the
meeting, or, if not so specified, at the place where the meeting is to be held.
The list shall also be produced and kept at the time and place of the meeting
during the whole time thereof, and may be inspected by any stockholder who is
present.

         Section 5. Special meetings of the stockholders, for any purpose or
purposes, unless otherwise prescribed by statute or by the certificate of
incorporation, may be called by the chief executive officer and shall be called
by the chief executive officer or secretary at the request in writing of a
majority of the board of directors, or at the request in writing of a
stockholder or stockholders owning an aggregate of twenty-five percent (25%) or
more of the entire capital stock of the corporation issued and outstanding and
entitled to vote. Such request shall state the purpose or purposes of the
proposed meeting.

         Section 6. Written notice of a special meeting stating the place, date
and hour of the meeting and the purpose or purposes for which the meeting is
called, shall be given not less than ten (ten) nor more than sixty (60) days
before the date of the meeting, to each stockholder entitled to vote at such
meeting.

         Section 7. Business transacted at any special meeting of stockholders
shall be limited to the purposes stated in the notice.


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         Section 8. The holders of a majority of the stock issued and
outstanding and entitled to vote thereat, present in person or represented by
proxy, shall constitute a quorum at all meetings of the stockholders for the
transaction of business except as otherwise provided by statute or by the
certificate of incorporation. If, however, such quorum shall not be present or
represented at any meeting of the stockholders, the stockholders entitled to
vote thereat, present in person or represented by proxy, shall have power to
adjourn the meeting from time to time, without notice other than announcement at
the meeting, until a quorum shall be present or represented. At such adjourned
meeting at which a quorum shall be present or represented any business may be
transacted which might have been transacted at the meeting as originally
notified. If the adjournment is for more than thirty days, or if after the
adjournment a new record date is fixed for the adjourned meeting, a notice of
the adjourned meeting shall be given to each stockholder of record entitled to
vote at the meeting.

         Section 9.  When a quorum is present at any meeting, the vote of the
holders of a majority of the stock having voting power present in person or
represented by proxy shall decide any question brought before such meeting,
unless the question is one upon which by express provision of the statutes or
of the certificate of incorporation, a different vote is required in which case
such express provision shall govern and control the decision of such question.

         Section 10. Unless otherwise provided in the certificate of
incorporation each stockholder shall at every meeting of the stockholders be
entitled to one vote in person or by proxy for each share of the capital stock
having voting power held by such stockholder, but no proxy shall be voted on
after three years from its date, unless the proxy provides for a longer period.

         Section 11. Unless otherwise provided in the certificate of
incorporation, any action required to be taken at any annual or special meeting
of stockholders of the corporation, or any action which may be taken at any
annual or special meeting of such stockholders, may be taken without a meeting,
without prior notice and without a vote, if a consent in writing, setting forth
the action so taken, shall be signed by the holders of outstanding stock having
not less than the minimum number of votes that would be necessary to authorize
or take such action at a meeting at which all shares entitled to vote thereon
were present and voted. Prompt notice of the taking of the corporate action
without a meeting by less than unanimous written consent shall be given to those
stockholders who have not consented in writing.


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                                   ARTICLE III
                                    DIRECTORS

         Section 1. The number of directors which shall constitute the whole
board shall not be less than five (5) nor more than eight (8). The first board
shall consist of four (4) directors. Thereafter, within the limits above
specified, the number of directors shall be determined by resolution of the
board of directors or by the stockholders at the annual meeting. The directors
shall be elected at the annual meeting of the stockholders, except as provided
in Section 2 of this Article, and each director elected shall hold office until
his successor is elected and qualified. Directors need not be stockholders.

         Section 2. Vacancies in the board of directors as to members of the
board elected by a class of stock or any newly created directorships resulting
from any increase in the number of directors to be elected by a class of stock
may be filled by a majority of the remaining directors of such class, whether or
not less than a quorum, or by a sole remaining director of such class. A vacancy
created by the removal of a director pursuant to Section 141 of the Delaware
General Corporation Law may be filled only by the affirmative vote of a majority
of the shares of the class of stock entitled to vote represented at a duly held
meeting at which a quorum is present, or by the written consent of holders of a
majority of the outstanding shares of the class entitled to vote. Each director
so elected shall hold office until the next annual election and until successors
are duly elected and shall qualify, unless sooner displaced.

         If there are no directors in office, then an election of directors may
be held in the manner provided by statute. If, at the time of filling any
vacancy or any newly created directorship, the directors then in office shall
constitute less than a majority of the whole board (as constituted immediately
prior to any such increase), the Court of Chancery may, upon application of any
stockholder or stockholders holding at least ten percent (10%) of the total
number of the shares at the time outstanding having the right to vote for such
directors, summarily order an election to be held to fill any such vacancies or
newly created directorships, or to replace the directors chosen by the directors
then in office.

         Section 3. The business of the corporation shall be managed by or under
the direction of its board of directors which may exercise all such powers of
the corporation and do all such lawful acts and things as are not by statute or
by the certificate of incorporation or by these by-laws directed or required to
be exercised or done by the stockholders.

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                      MEETINGS OF THE BOARD OF DIRECTORS


     Section 4.  The board of directors of the corporation may hold meetings,
both regular and special, either within or without the State of Delaware.

     Section 5.  The first meeting of each newly elected board of directors
shall be held at such time and place as shall be fixed by the vote of the
stockholders at the annual meeting and no notice of such meeting shall be
necessary to the newly elected directors in order legally to constitute the
meeting, provided a quorum shall be present.  In the event of the failure of
the stockholders to fix the time or place of such first meeting of the newly
elected board of directors, or in the event such meeting is not held at the
time and place so fixed by the stockholders, the meeting may be held at such
time and place as shall be specified in a notice given as hereinafter provided
for special meetings of the board of directors, or as shall be specified in a
written waiver signed by all of the directors.

     Section 6.  Regular meetings of the board of directors may be held without
notice at such time and at such place as shall from time to time be determined
by the board.

     Section 7.  Special meetings of the board may be called by the chief
executive officer on three (3) days notice to each director, either personally
or by mail or by telegram; special meetings shall be called by the chief
executive officer or secretary in like manner and on like notice on the written
request of two directors unless the board consists of only one director; in
which case, special meetings shall be called by the chief executive officer or
secretary in like manner and on like notice on the written request of the sole
director.

     Section 8.  At all meetings of the board a majority of the directors shall
constitute a quorum for the transaction of business and the act of a majority
of the directors present at any meeting at which there is a quorum shall be the
act of the board of directors, except as may be otherwise specifically provided
by statute or by the certificate of incorporation.  If a quorum shall not be
present at any meeting of the board of directors the directors present thereat
may adjourn the meeting from time to time, without notice other than
announcement at the meeting, until a quorum shall be present.

     Section 9.  Unless otherwise restricted by the certificate of incorporation
or these by-laws, any action required or permitted to be taken at any meeting
of the board of directors or of any committee thereof may be taken without a
meeting, if all members of the board or committee, as the case may be, consent
thereto in writing, and the writing or writings are filed with the minutes of
proceedings of the board or committee.

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         Section 10. Unless otherwise restricted by the certificate of
incorporation or these by-laws, members of the board of directors, or any
committee designated by the board of directors, may participate in a meeting of
the board of directors, or any committee, by means of conference telephone or
similar communications equipment by means of which all persons participating in
the meeting can hear each other, and such participation in a meeting shall
constitute presence in person at the meeting.

                             COMMITTEES OF DIRECTORS

         Section 11. The board of directors may, by resolution passed by a
majority of the whole board, designate one or more committees, each committee
to consist of one or more of the directors of the corporation. The board may
designate one or more directors as alternate members of any committee, who may
replace any absent or disqualified member at any meeting of the committee.

         In the absence or disqualification of a member of a committee, the
member or members thereof present at any meeting and not disqualified from
voting, whether or not he or they constitute a quorum, may unanimously appoint
another member of the board of directors to act at the meeting in the place of
any such absent or disqualified member.

         Any such committee, to the extent provided in the resolution of the
board of directors, shall have and may exercise all the powers and authority of
the board of directors in the management of the business and affairs of the
corporation, and may authorize the seal of the corporation to be affixed to all
papers which may require it; but no such committee shall have the power or
authority in reference to amending the certificate of incorporation, adopting an
agreement of merger or consolidation, recommending to the stockholders the sale,
lease or exchange of all or substantially all of the corporation's property and
assets, recommending to the stockholders a dissolution of the corporation or a
revocation of a dissolution, or amending the by-laws of the corporation; and,
unless the resolution or the certificate of incorporation expressly so provide,
no such committee shall have the power or authority to declare a dividend or to
authorize the issuance of stock. Such committee or committees shall have such
name or names as may be determined from time to time by resolution adopted by
the board of directors.

         Section 12. Each committee shall keep regular minutes of its meetings
and report the same to the board of directors when required.


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                           COMPENSATION OF DIRECTORS

     SECTION 13.  Unless otherwise restricted by the certificate of
incorporation or these by-laws, the board of directors shall have the authority
to fix the compensation of directors.  The directors may be paid their
expenses, if any, of attendance at each meeting of the board of directors and
may be paid a fixed sum for attendance at each meeting of the board of
directors or a stated salary as director.  No such payment shall preclude any
director from serving the corporation in any other capacity and receiving
compensation therefor.  Members of special or standing committees may be
allowed like compensation for attending committee meetings.

                              REMOVAL OF DIRECTORS

     SECTION 14.  Unless otherwise restricted by the certificate of
incorporation or by law, any director or the entire board of directors may be
removed, with or without cause, by the holders of a majority of shares entitled
to vote at an election of directors.

                                   ARTICLE IV
                                     NOTICE

     SECTION 1.  Whenever, under the provisions of the statutes or of the
certificate of incorporation or of these by-laws, notice is required to be
given to any director or stockholder, it shall not be construed to mean
personal notice, but such notice may be given in writing, by mail, addressed to
such director or stockholder, at his address as it appears on the records of
the corporation, with postage thereon prepaid, and such notice shall be deemed
to be given at the time when the same shall be deposited in the United States
mail.  Notice to the directors may also be given by telegram.

     SECTION 2.  Whenever any notice is required to be given under the
provisions of the statutes or of the certificate of incorporation or of these
by-laws, a waiver thereof in writing, signed by the person or persons entitled
to said notice, whether before or after the time stated therein, shall be
deemed equivalent thereto.


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                                   ARTICLE V
                                        
                                    OFFICERS

     SECTION 1.  The officers of the corporation shall be chosen by the board
of directors and shall be a chief executive officer, a president, a vice
president, a secretary, and a treasurer.  The board of directors may also
choose additional vice-presidents, and one or more assistant secretaries and
assistant treasurers.  Any number of offices may be held by the same person,
unless the certificate of incorporation or these by-laws otherwise provide.

     SECTION 2.  The board of directors at its first meeting after each annual
meeting of stockholders shall choose a chief executive officer, a president,
one or more vice-presidents, a secretary, and a treasurer.

     SECTION 3.  The board of directors may appoint such other officers and
agents as it shall deem necessary who shall hold their offices for such terms
and shall exercise such powers and perform such duties as shall be determined
from time to time by the board.

     SECTION 4.  The salaries of all officers and agents of the corporation
shall be fixed by the board of directors.

     SECTION 5.  The officers of the corporation shall hold office until their
successors are chosen and qualify.  Any officer elected or appointed by the
board of directors may be removed at any time by the affirmative vote of a
majority of the board of directors.  Any vacancy occurring in any office of the
corporation shall be filled by the board of directors.

                          THE CHIEF EXECUTIVE OFFICER

     SECTION 6.  The chief executive officer of the corporation shall preside
at all meetings of the stockholders and the board of directors, shall have
general and active management of the business of the corporation and shall see
that all orders and resolutions of the board of directors are carried into
effect.

     SECTION 7.  He shall execute bonds, mortgages and other contracts
requiring a seal, under the seal of the corporation, except where required or
permitted by law to be otherwise signed and executed and except where the
signing and execution thereof shall be expressly delegated by the board of
directors to some other officer or agent of the corporation.


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                         THE PRESIDENT/VICE PRESIDENTS

     SECTION 8.  The president shall be the chief operating officer of the
corporation and shall perform such other duties and have such other powers as
the chief executive office may from time to time prescribe.  In the absence of
the chief executive officer or in the event of his inability or refusal to act,
the president shall perform the duties of the chief executive officer, and when
so acting, shall have all the powers of and be subject to all the restrictions
upon the chief executive officer.

     In the absence of the chief executive officer and the president or in the
event of their inability or refusal to act, the vice-president (or in the event
there may be more than one vice-president the vice-presidents in the order
designated by the directors, or in the absence of any designation, then in the
order of their election) shall perform the duties of the chief executive
officer and the president, and when so acting, shall have all the powers of and
be subject to all the restrictions upon the chief executive officer and the
president.  The vice-presidents shall perform such other duties and have such
other powers as the chief executive officer, and the president may from time to
time prescribe.

                     THE SECRETARY AND ASSISTANT SECRETARY

     SECTION 9.  The secretary shall attend all meetings of the board of
directors and all meetings of the stockholders and record all the proceedings
of the meetings of the corporation and of the board of directors in a book to
be kept for that purpose and shall perform like duties for the standing
committees when required.  He shall give, or cause to be given, notice of all
meetings of the stockholders and special meetings of the board of directors,
and shall perform such other duties as may be prescribed by the board of
directors or chief executive officer, under whose supervision he shall be.  He
shall have custody of the corporate seal of the corporation and he, or an
assistant secretary, shall have authority to affix the same to any instrument
requiring it and when so affixed, it may be attested by his signature or by the
signature of such assistant secretary.  The board of directors may give general
authority to any other officer to affix the seal of the corporation and to
attest the affixing by his signature.


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     SECTION 10.  The assistant secretary, or if there be more than one, the
assistant secretaries in the order determined by the board of directors (of if
there be no such determination, then in the order of their election) shall, in
the absence of the secretary or in the event of his inability or refusal to
act, perform the duties and exercise the powers of the secretary and shall
perform such other duties and have such other powers as the board of directors
may from time to time prescribe.

                     THE TREASURER AND ASSISTANT TREASURERS

     SECTION 11.  The treasurer shall have the custody of the corporate funds
and securities and shall keep full and accurate accounts of receipts and
disbursements in books belonging to the corporation and shall deposit all
moneys and other valuable effects in the name and to the credit of the
corporation in such depositories as may be designated by the board of directors.

     SECTION 12.  He shall disburse the funds of the corporation as may be
ordered by the board of directors, taking proper vouchers for such
disbursements, and shall render to the chief executive officer and the board of
directors, at its regular meetings, or when the board of directors so requires,
an account of all his transactions as treasurer and of the financial condition
of the corporation.

     SECTION 13.  If required by the board of directors, he shall give the
corporation a bond (which shall be renewed every six (6) years) in such sum and
with such surety or sureties as shall be satisfactory to the board of directors
for the faithful performance of the duties of his office and for the
restoration to the corporation, in case of his death, resignation, retirement or
removal from office, of all books, papers, vouchers, money and other property
of whatever kind in his possession or under his control belonging to the
corporation.

     SECTION 14.  The assistant treasurer, or if there shall be more than one,
the assistant treasurers in the order determined by the board of directors (or
if there be no such determination, then in the order of their election, shall,
in the absence of the treasurer or in the event of his inability or refusal to
act, perform the duties and exercise the powers of the treasurer and shall
perform such other duties and have such other powers as the board of directors
may from time to time prescribe.


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                                   ARTICLE VI

                              CERTIFICATE OF STOCK

     SECTION 1.  Every holder of stock in the corporation shall be entitled to
have a certificate, signed by, or in the name of the corporation by, the
chairman or vice-chairman of the board of directors, or the chief executive
officer, or the president, or a vice-president and the treasurer or an
assistant treasurer, or the secretary or an assistant secretary of the
corporation, certifying the number of shares owned by him in the corporation.

     Certificates may be issued for partly paid shares and in such case upon
the face or back of the certificates issued to represent any such partly paid
shares, the total amount of the consideration to be paid therefor, and the
amount paid thereon shall be specified.

     SECTION 2.  Any of or all the signatures on the certificate may be
facsimile  In case any officer, transfer agent or registrar who has signed or
whose facsimile signature has been placed upon a certificate shall have ceased
to be such officer, transfer agent or registrar before such certificate is
issued, it may be issued by the corporation with the same effect as if he were
such officer, transfer agent or registrar at the date of issue.

                               LOST CERTIFICATES

     SECTION 3.  The board of directors may direct a new certificate or
certificates to be issued in place of any certificate or certificates
theretofore issued by the corporation alleged to have been lost, stolen or
destroyed, upon the making of an affidavit of that fact by the person claiming
the certificate of stock to be lost, stolen or destroyed.  When authorizing such
issue of a new certificate or certificates, the board of directors may, in its
discretion and as a condition precedent to the issuance thereof, require the
owner of such lost, stolen or destroyed certificate or certificates, or his
legal representative, to advertise the same in such manner as it shall require
and/or to give the corporation a bond in such sum as it may direct as indemnity
against any claim that may be made against the corporation with respect to the
certificate alleged to have been lost, stolen or destroyed.


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                               TRANSFER OF STOCK

     SECTION 4.  Upon surrender to the corporation or the transfer agent of
the corporation of a certificate for shares duly endorsed or accompanied by
proper evidence of succession, assignation or authority to transfer, it shall
be the duty of the corporation to issue a new certificate to the person
entitled thereto, cancel the old certificate and record the transaction upon
its books.

                               FIXING RECORD DATE

     SECTION 5.  In order that the corporation may determine the stockholders
entitled to notice of or to vote at any meeting of stockholders or any
adjournment thereof, or to express consent to corporate action in writing
without a meeting, or entitled to receive payment of any dividend or other
distribution or allotment of any rights, or entitled to exercise any rights in
respect of any change, conversion or exchange of stock or for the purpose of
any other lawful action, the board of directors may fix, in advance, a record
date, which shall not be more than sixty (60%) nor less than ten (10) days
before the date of such meeting, nor more than sixty days prior to any other
action.  A determination of stockholders of record entitled to notice of or to
vote at a meeting of stockholders shall apply to any adjournment of the
meeting:  provided, however, that the board of directors may fix a new record
date for the adjourned meeting.

                            REGISTERED STOCKHOLDERS

     SECTION 6.  The corporation shall be entitled to recognize the exclusive
right of a person registered on its books as the owner of shares to receive
dividends, and to vote as such owner, and to hold liable for calls and
assessments a person registered on its books as the owner of shares, and shall
not be bound to recognize any equitable or other claim to or interest in such
share or shares on the part of any other person, whether or not it shall have
express or other notice thereof, except as otherwise provided by the laws of
Delaware.


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                                  ARTICLE VII
                                        
                               GENERAL PROVISIONS
                                        
                                   DIVIDENDS

     SECTION 1.  Dividends upon the capital stock of the corporation, subject
to the provisions of the certificate of incorporation, if any, may be declared
by the board of directors at any regular or special meeting, pursuant to law.
Dividends may be paid in cash, in property, or in shares of the capital stock,
subject to the provisions of the certificate of incorporation.

     SECTION 2.  Before payment of any dividend, there may be set aside out of
any funds of the corporation available for dividends such sum or sums as the
directors from time to time, in their absolute discretion, think proper as a
reserve or reserves to meet contingencies, or for equalizing dividends, or for
repairing or maintaining any property of the corporation, or for such other
purpose as the directors shall think conducive to the interest of the
corporation, and the directors may modify or abolish any such reserve in the
manner in which it was created.

                                ANNUAL STATEMENT

     SECTION 3.  The board of directors shall present at each annual meeting,
and at any special meeting of the stockholders when called for by vote of the
stockholders, a full and clear statement of the business and condition of the
corporation.

                                     CHECKS

     SECTION 4.  All checks or demands for money and notes of the corporation
shall be signed by such officer or officers of such other person or persons as
the board of directors may from time to time designate.

                                  FISCAL YEAR

     SECTION 5.  The fiscal year of the corporation shall be fixed by
resolution of the board of directors.


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                                      SEAL

     SECTION 6.  The corporate seal shall have inscribed thereon the name of
the corporation, the year of its organization and the words "Corporate Seal,
Delaware".  The seal may be used by causing it or a facsimile thereof to be
impressed or affixed or reproduced or otherwise.

                                INDEMNIFICATION

     SECTION 7.  The corporation shall indemnify its officers, directors,
employees and agents to the extend permitted by the Delaware General
Corporation Law.

                                  ARTICLE VIII
                                        
                                   AMENDMENTS

     SECTION 1.  These by-laws may be altered, amended or repealed or new
by-laws may be adopted by the stockholders or by the board of directors, when
such power is conferred upon the board of directors by the certificate of
incorporation at any regular meeting of the stockholders or of the board of
directors or at any special meeting of the stockholders or of the board of
directors if notice of such alteration, amendment, repeal or adoption of new
by-laws be contained in the notice of such special meeting.  Provided, however,
that any provision in these by-laws, which requires a vote by class of
stockholders cannot be amended, altered or repealed without the majority vote
of that class.  If the power to adopt, amend or repeal by-laws is conferred
upon the board of directors by the certificate of incorporation it shall not
divest or limit the power of the stockholders to adopt, amend or repeal by-laws.


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                                 CERTIFICATION

KNOW ALL MEN BY THESE PRESENTS:

     That I, the undersigned, the duly elected and acting Secretary of HEALTH
DATA SCIENCES CORPORATION, do hereby certify that the above and foregoing
restated by-laws were adopted as the by-laws of said corporation on the 24th of
April 1995.

     IN WITNESS WHEREOF, I have hereunto subscribed my name this 24th of April,
1995.


                                  /s/ Janice E. Ticich
                                  -------------------------
                                  JANICE E. TICICH
                                  Secretary




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