1. Department of Orthopedic Surgery Japanese Red Cross Nagoya Daiichi Hospital Nagoya Aichi Japan
2. Department of Orthopedic Surgery and Rheumatology Nagoya University Graduate School of Medicine Nagoya Aichi Japan
3. Department of Orthopedic Surgery Japan Community Healthcare Organization Kani Tono Hospital Kani Gifu Japan
4. Department of Orthopedic Surgery, Yokkaichi Municipal Hospital Yokkaichi Mie Japan
5. Department of Orthopedic Surgery Kariya Toyota General Hospital Kariya Aichi Japan