1. From the Department of Neurology (J.R.R., A.S.B., R.A., A.P., C.S.K., P.A.W., S.S.), Sections of Preventive Medicine (E.J.B.), and Cardiology (E.J.B., J.F.), and Department of Radiology (J.W.), School of Medicine and the Department of Biostatistics (S.R.P., A.S.B.), School of Public Health at Boston University, Boston, MA; Department of Neurology University of California-Davis, Davis, California (C.D.); Department of Neurology, Harvard Medical School, Boston, MA (A.V.); WW Epidemiology, Research and...