1. Department of Cerebrovascular Medicine National Cerebral and Cardiovascular Center Suita Japan
2. Department of Neurology and Geriatrics Kagoshima University Graduate School of Medical and Dental Sciences Kagoshima Japan
3. Department of Neurology National Cerebral and Cardiovascular Center Suita Japan
4. Department of Medical and Health Information Management National Cerebral and Cardiovascular Center Suita Japan
5. Division of Stroke Care Unit National Cerebral and Cardiovascular Center Suita Japan