1. Dr. Menken is Associate Professor of Neurology, College of Medicine and Dentistry of New Jersey, Rutgers Medical School, Piscataway, N.J., where Dr. Safer is Clinical Assistant Professor of Radiology and Dr. Goldfarb is Clinical Associate Professor. Dr. Safer is also Neuroradiologist, Middlesex General Hospital, New Brunswick, N.J., and Dr. Goldfarb is also Director of Psychiatry, Muhlenberg Hospital, Plainfield, N.J. Address reprint requests to Dr. Menken at 7 Wirt St., New Brunswick, N.J. 08901.