1. Reprints: Seth M. Powsner, MD, Yale Psychiatry 2039cb, 20 York St, New Haven, CT 06504.
2. From the Department of Psychiatry and Center for Medical Informatics (Dr Powsner) and the Department of Pathology (Drs Costa and Homer), Yale University School of Medicine, New Haven, Conn; and Pathology and Laboratory Medicine Service, VA Connecticut Healthcare System, West Haven, Conn (Dr Homer).