1. Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
2. Department of Neurosurgery, Iwate Medical University, Yahaba, Japan
3. Department of Neurosurgery, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
4. Division of Neurology and Gerontology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Yahaba, Japan
5. Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
6. Department of Neurology, Osaka City University Graduate School of Medicine, Osaka, Japan
7. Department of Neurology, The Jikei University School of Medicine, Tokyo, Japan
8. Department of Neurosurgery, Kyorin University Faculty of Medicine, Mitaka, Japan
9. Department of Neurosurgery, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
10. Stroke Center, Kindai University Hospital, Osakasayama, Japan
11. Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Japan
12. Department of Cerebrovascular Medicine and Neurology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
13. Department of Neurosurgery, Kindai University Faculty of Medicine, Osakasayama, Japan
14. Department of Neurosurgery, Nara Medical University, Kashihara, Japan
15. Department of Rehabilitation Medicine, School of Medicine, International University of Health and Welfare, Chiba, Japan