1. National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
2. Department of Neurology, MedStar Georgetown University Hospital, Washington, DC
3. Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Republic of Korea
4. Stroke Center, Neurology Service, University Hospital of Lausanne, Lausanne, Switzerland
5. Melbourne Braine Center at Royal Melbourne Hospital, Department of Medicine, University of Melbourne, Parkville, Victoria, Australia
6. Department of Neurology, University of Maryland School of Medicine, Baltimore