1. From the National Institute of Neurological Disorders and Stroke, National Institutes of Health (F.B., J.I.K., R.A.C., L.B.J., S.J., L.M.M., C.S.M., I.R., W.K.); Department of Neurology, Massachusetts General Hospital, Boston (C.A., E.H.L., L.H.S.); Oregon Health & Science University, Portland (S.A.B., M.P.S.-P.); Department of Neurology and Neurological Surgery, University of Washington, Seattle (K.B.); Department of Neurology and Rehabilitation Medicine, University of Cincinnati, OH (J.P.B.);...