[1] VERTEX PHARMACEUT INC,CAMBRIDGE,MA 02139
[2] MERCK FROSST CTR THERAPEUT RES,QUEBEC CITY,PQ 9H9 3L1,CANADA
[3] LA JOLLA CANC RES FDN,SAN DIEGO,CA 92137
[4] MERCK RES LABS,RAHWAY,NJ 07065
[5] BASF AG,BIORES CORP,WORCESTER,MA 01605
[6] HARVARD UNIV,SCH MED,BOSTON,MA 02115