1. Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center
2. Division of Stroke Care Unit, National Cerebral and Cardiovascular Center
3. Department of Neurology, Saiseikai Fukuoka General Hospital
4. Department of Radiology, National Cerebral and Cardiovascular Center
5. Department of Neurosurgery, National Cerebral and Cardiovascular Center
6. Department of Neurology, National Cerebral and Cardiovascular Center
7. Division of Neurology and Gerontology, Iwate Medical University
8. Division of Diagnostic and Interventional Radiology, Hokkaido University
9. Division of Stroke Medicine, National Hospital Organization Osaka National Hospital