1. Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center
2. Department of Stroke Medicine, Kawasaki Medical School
3. Division of Neurology, Jichi Medical University School of Medicine
4. Department of Neurology, Osaka University Graduate School of Medicine
5. Department of Neurology, the Jikei University School of Medicine
6. Department of Stroke and Cerebrovascular Medicine, Kyorin University
7. Division of Stroke Care Unit, National Cerebral and Cardiovascular Center
8. Department of Neurology, National Cerebral and Cardiovascular Center
9. Department of Neurology, Graduate School of Medicine, Nippon Medical School Hospital