1. Current address: Chemical Abstracts Service, Columbus, OH 43210
2. Current address: Finnigan MAT, San Jose, CA 95134
3. Current address: Department of Psychiatry, Mt. Sinai School of Medicine and Bronx Veterans' Administration Medical Center, New York, NY 10029
4. Current address: Lawrence Livermore National Laboratory, University of California, Livermore, CA 94550
5. Current address: Lederle Laboratories, American Cyanamid Corporation, Pearl River, NY 10965