1. Spine and Spinal Cord Center, Tokyo Mita Hospital, International University of Health and Welfare
2. Department of Neurosurgery, Tokyo Metropolitan Ebara Hospital
3. Department of Orthopedics, Tokyo Metropolitan Ebara Hospital
4. Department of Radiology, Tokyo Metropolitan Ebara Hospital
5. Department of Pathology, Tokyo Metropolitan Ebara Hospital
6. Department of Anatomy, Kyorin University School of Medicine