1. Department of Neurology, Fukuoka Neurosurgical Hospital, Fukuoka, Fukuoka, Japan
2. Department of Neurosurgery, Fukuoka Neurosurgical Hospital, Fukuoka, Fukuoka, Japan
3. Go Neurosurgical Clinic, Chikushi-gun, Fukuoka, Japan
4. Department of Neurosurgery, St. Mary’s Hospital, Kurume, Fukuoka, Japan
5. Department of Neurosurgery, The Hospital of Hyogo College of Medicine, Nishinomiya, Hyogo, Japan