1. From the Department of Neurology (Y.-H.H., Y.-W.K.), Department of Neurosurgery (D.-H.K.), Department of Radiology (Y.-W.K., D.-H.K., Y.-S.K.), and Cerebrovascular Center (Y.-H.H., Y.-W.K., D.-H.K., Y.-S.K.), Kyungpook National University School of Medicine and Hospital, Daegu, South Korea; and UCLA Stroke Center (D.S.L.), University of California, Los Angeles.