1. Department of Orthopaedic Surgery, Nippon Medical School, Tokyo, Japan
2. Inanami Spine and Joint Hospital, Tokyo, Japan
3. Department of Orthopaedics, Kyoto Prefectural University of Medicine, Kyoto, Japan
4. AIC Yaesu Clinic, Tokyo, Japan
5. Department of General Medical Services, Graduate School of Medicine, Chiba University, Chiba, Japan
6. Philips Healthcare, MR Clinical Science, Tokyo, Japan
7. Minami-Shinjuku Orthopaedic Rehabilitation Clinic, Tokyo, Japan