1. From the Departments of Psychiatry, Neurology & Neurosurgery, Montreal Neurological Institute and McGill University Health Centre, McGill University, Montreal, Quebec, Canada (S.D.); the Department of Psychiatry and Behavioral Sciences, Stanford University Hospital, Palo Alto, Calif. (S.B.); Massachusetts General Hospital, Harvard University, Boston (B.C.D.); and the Department of Behavioural and Clinical Neurosciences, Institute of Cambridge, University of Cambridge (V.V.).