1. Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka;
2. Department of Clinical Trials and Research, National Hospital Organization Nagoya Medical Centre, Nagoya;
3. Department of Preventive Medicine and Epidemiologic Informatics, National Cerebral and Cardiovascular Centre, Suita;
4. Department of Public Health/Health Policy, Graduate School of Medicine, University of Tokyo;
5. Integrative Stroke Imaging Centre;
6. Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Centre, Suita;
7. Department of Neurosurgery, Iwate Medical University, Morioka;
8. Department of Neurosurgery, Chiba Cerebral and Cardiovascular Centre, Chiba;
9. Department of Neurosurgery, Kyorin University, Mitaka;
10. Department of Emergency and Critical Care Medicine, Showa University Hospital, Shinagawa;
11. Department of Neurosurgery, Osaka Medical College, Takatsuki;
12. Department of Neurosurgery, Kokura Memorial Hospital, Kitakyushu;
13. Department of Preventive Medicine and Community Health, School of Medicine, University of Occupational and Environmental Health, Kitakyushu;
14. Department of Neurosurgery, Hyogo College of Medicine, Nishinomiya;
15. Department of Emergency and Critical Care Medicine, Nara Medical University, Kashihara;
16. Department of Surgical Neurology, Research Institute for Brain and Blood Vessels-Akita; and
17. Department of Health Communication, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan