1. Department of Neurology National Cerebral and Cardiovascular Center Osaka Japan
2. Department of Neurology, Graduate School of Medical Sciences Kumamoto University Kumamoto Japan
3. Department of Cerebrovascular Medicine National Cerebral and Cardiovascular Center Osaka Japan
4. Department of Neurology Kyoto University Graduate School of Medicine Kyoto Japan
5. Department of Epilepsy, Movement Disorders and Physiology Kyoto University Graduate School of Medicine Kyoto Japan
6. Departments of Preventive Medicine and Epidemiology National Cerebral and Cardiovascular Center Osaka Japan
7. Division of Neurology Kobe University Graduate School of Medicine Kobe Japan