1. From the Department of Neurology (Z.C., M.Z., F.S., X.G., C.L., R.Z., M.L.)
2. UCLA Stroke Center, University of California, Los Angeles (D.L.).
3. Department of Radiology (X.D.)
4. The Second Affiliated Hospital of Zhejiang University, School of Medicine, Zhejiang University Brain Research Institute, Hangzhou, China (M.L.)