1. M. S. Kramer is at Merck Research Laboratories, West Point, PA 19456, USA, and in the Department of Psychiatry and Human Behavior, Thomas Jefferson Medical College, Philadelphia, PA 19107, USA. N. Cutler and J. J. Sramek are at California Clinical Trials, Beverly Hills, CA 90211, USA. J. Feighner is at the Feighner Research Institute, San Diego, CA 92121, USA. R. Shrivastava is at the Eastside Medical Group, New York, NY 10021, USA. J. Carman is at Carman Research, Smyrna, GA 30080, USA. S. A....
2. M. Kramer and N. Rupniak are the principal contributors to the clinical and preclinical studies, respectively.