1. Department of Orthopedic Surgery, Japan Community Health Care Organization
2. Department of Orthopaedic Surgery, Kyoto University
3. Department of Orthopaedic Surgery, Kyoto City Hospital
4. Department of Orthopaedic Surgery, Kobe Central General Hospital
5. Department of Orthopaedic Surgery, Kitano Hospital
6. Department of Orthopaedic Surgery, Gakkentoshi Hospital
7. Department of Orthopaedic Surgery, Osaka Red Cross Hospital
8. Department of Orthopaedic Surgery, National Hospital Organization Kyoto Medical Center