1. Dr. Kurdyak is with the Centre for Addiction and Mental Health and the Institute for Clinical Evaluation, Toronto. Dr. Vigod is with the Department of Psychiatry, Women’s College Hospital, Toronto. She is also with the Department of Psychiatry, University of Toronto, where Dr. Mulsant is affiliated. Ms. Newman, Mr. Giannakeas, and Dr. Stukel are with the Institute for Clinical Evaluative Sciences, Toronto.