1. Department of Neurosurgery, Chubu Tokushukai Hospital
2. Department of Cerebrovascular Disease and Acute Coronary Syndrome, Graduate School of Medical Sciences, Kumamoto University
3. Department of Neurosurgery, Graduate School of Medical Sciences, Kumamoto University
4. Department of Neurosurgery, Koshigaya Hospital, Dokkyo Medical University
5. Department of Neurosurgery, Faculty of Medicine, University of the Ryukyus