1. From the Departments of Neurology, Neurosurgery, and Radiology (R.G.N.), Emory University School of Medicine, Marcus Stroke & Neuroscience Center, Grady Memorial Hospital, Atlanta, GA; Department of Neurology (W.S.S.), University of California, San Francisco, CA; Department of Neurology (G.S.), University of Southern California, Los Angeles, CA; Department of Interventional Neuroradiology (G.D.), University of California, Los Angeles, CA; Division of Clinical Research (G.W.), Concentric Medical...