1. From the Department of Neurochemistry and Psychiatry (E.J., K.B., D.G., S.Ö., M.W., X.G., I.S.), Neuropsychiatric Epidemiology Unit, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Departments of Neurology and Medicine (D.G.), State University of New York-Downstate Medical Center, Brooklyn, New York.