1. From the Division of General Medical Sciences, Washington University School of Medicine, St. Louis, Mo (B.F.G.); Departments of Medicine and of Epidemiology and Community Medicine, University of Ottawa, and Ottawa Health Research Institute, Ottawa, Canada (C.v.W.); Biostatistical Consultant, Minot, ND (L.P.); Department of Medicine (Neurology), University of Texas Health Science Center, San Antonio, Tex (R.G.H.); Department of Neurology, Erasmus Medical Center, Rotterdam, the Netherlands (P.J.K.);...