1. Drug Safety Evaluation Bristol-Myers Squibb Company Bristol-Myers Squibb Pharmaceutical Research Institute 6000 North Thompson Road East Syracuse, New York 13057
2. Subdivision of Pathology Preclinical Safety Ciba Pharmaceuticals 556 Morris Avenue Summit, New Jersey 07901
3. Rhône-Poulanc Rorer Department of Pathology (U.S.) P.O. Box 5090 Collegeville, Pennsylvania 19426-0994