1. From the Stroke Center and Department of Neurology, University of California, Los Angeles (J.L.S.); the Department of Neurology, University of Virginia (Charlottesville) (K.C.J., L.L.T., E.C.H.); the Department of Neurology, Northwestern Medical School, Evanston, Ill (D.H.); the Department of Neurology, Johns Hopkins University, Baltimore, MD (R.W.); and the Department of Neurology, Harvard Medical School, Boston, Mass (W.K.).