1. From the Department of Neurology (L.B.M., C.J.B., C.O., D.B.Z.), Michigan Medicine; Center for Social Epidemiology and Population Health (L.B.M.), University of Michigan School of Public Health, Ann Arbor; University of Iowa (R.L.), Iowa City; and Departments of Biostatistics (G.Z., K.H.), and Epidemiology (E.C.), University of Michigan School of Public Health, Ann Arbor.