1. Department of Cerebrovascular Medicine and Neurology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center
2. Department of Cerebrovascular Medicine, National Hospital Organization Kagoshima Medical Center
3. Department of Cerebrovascular Medicine, Steel Memorial Yawata Hospital
4. Department of Cardiovascular Diseases, Shin-Kokura Hospital
5. Department of Neurosurgery, Hara Sanshin Hospital
6. Department of Neurosurgery, National Hospital Organization Kyushu Medical Center
7. Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University Hospital