[1] AUSTRALIAN INST MARINE SCI, TOWNSVILLE, QLD 4810, AUSTRALIA
[2] MERCK RES LABS, RAHWAY, NJ 07065 USA
[3] SMITHKLINE BEECHAM PHARMACEUT, KING OF PRUSSIA, PA 19406 USA
[4] UNIV ILLINOIS, COLL PHARM, DEPT MED CHEM & PHARMACOGNOSY, PROGRAM COLLABORAT RES PHARMACEUT SCI, CHICAGO, IL 60612 USA
[5] NCI, FREDERICK CANC RES & DEV CTR,DIV CANC TREATMENT, DEV THERAPEUT PROGRAM,NAT PROD BRANCH, FREDERICK, MD 21702 USA
[6] UNIV PANAMA, COLL PHARM, CTR PHARMACOGNOST RES PANAMANIAN FLORA, PANAMA CITY, PANAMA
[7] WALTER REED ARMY MED CTR, WALTER REED ARMY INST RES, WASHINGTON, DC 20307 USA
[8] NATL MUSEUM, DIV BOT, MANILA, PHILIPPINES
[9] PURDUE UNIV, SCH PHARM & PHARMACEUT SCI, DEPT MED CHEM & PHARMACOGNOSY, W LAFAYETTE, IN 47907 USA