1. From the Department of Neurology (R.F.G.), Johns Hopkins University School of Medicine, and Department of Epidemiology (J.C., A.R.S.), Johns Hopkins Bloomberg School of Public Health, Baltimore, Md; Departments of Biostatistics (D.J.C.) and Epidemiology (K.M.R.), Gillings School of Global Public Health, University of North Carolina at Chapel Hill; Department of Social Sciences and Health Policy (L.H.C.), Division of Public Health Sciences, Wake Forest University School of Medicine, Winston-Salem,...