1. Department of Neurosurgery, School of Medicine, Fukuoka University, Fukuoka
2. Department of Interventional Neuroradiology, Iizuka Hospital, Iizuka
3. Division of Plastic Surgery, Department of Orthopedics, School of Medicine, Fukuoka University, Fukuoka
4. Department of Radiology, Hitoyoshi General Hospital, Hitoyoshi, Japan