1. From the Department of Neurology (M.S.D., B.B.-A., T.R., R.L.S., M.S.V.E.), College of Physicians and Surgeons, Columbia University, New York, NY; the Department of Biostatistics (W.T., M.C.P.), Joseph P. Mailman School of Public Health, Columbia University, New York, NY; the Department of Sociomedical Sciences (B.B.-A.), Joseph P. Mailman School of Public Health, Columbia University, New York, NY; the Gertrude H. Sergievsky Center (R.L.S., M.S.V.E.), College of Physicians and Surgeons, Columbia...