1. From the Department of Neurology and Stroke Program, Wayne State University (S.C.), Detroit, Mich; the Division of Vascular Surgery (J.S.M.), University of Wisconsin School of Medicine and Public Health, Madison, Wis; the Center for Interventional Vascular Therapy (W.G.), Columbia University, New York, NY; and Abbott Vascular, Endovascular Clinical Science (C.X., P.V.), Santa Clara, Calif.