EXHIBIT A We, the undersigned, hereby express our agreement that the attached Schedule 13D is filed on behalf of each of us. Date: May 27, 1997 JMB/FEB PARTNERS KBH FAMILY 1992 TRUST KBH PARTNERS SEB FAMILY 1992 TRUST SEB PARTNERS AAB PARTNERS By...Schedule 13d Filing Agreement • May 27th, 1997 • Bryan John M • Services-medical laboratories
JMB/FEB PARTNERS KBH FAMILY 1992 TRUST KBH PARTNERS SEB FAMILY 1992 TRUST SEB PARTNERS AAB PARTNERS By Their Trustee Alan R. Brudos ALB PARTNERS BRYCO INVESTMENTS JUPITER PARTNERS
