1. D. Berger is at the Tokyo Institute of Psychiatry, 2-1-8, Kamikitazawa, Setagayaku, Tokyo 156, Japan, and at the Albert Einstein College of Medicine, Bronx, NY 10461, USA.
2. I. Fukunishi is at the Tokyo Institute of Psychiatry, 2-1-8, Kamikitazawa, Setagayaku, Tokyo 156, Japan.