1. From the Department of Neurology (N.S.), University of Southern California, Los Angeles, Calif; the Stroke Center and Department of Neurology (J.L.S., B.O.), University of California Los Angeles (UCLA) Medical Center, Los Angeles, Calif; the Department of Medicine (M.N.), UCLA Medical Center, Los Angeles, Calif; and the Department of Neurology (B.O.), Olive View UCLA Medical Center, Los Angeles, Calif.