1. From the Boston University School of Medicine (T.N.N., A.M.N.), Boston, Mass; Medical College of Wisconsin (O.O.Z., J.S.K.), Milwaukee, Wis; Cleveland Clinic Foundation (R.G.), Cleveland, Ohio; Department of Neurology (R.G., R.G.N.), Emory University School of Medicine, Marcus Stroke and Neuroscience Center, Grady Memorial Hospital, Atlanta, Ga; and Zeenat Qureshi Stroke Center (N.T., A.I.Q.), University of Minnesota, Minneapolis, Minn.