1. Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
2. Division of Rheumatology Nagaoka Red Cross Hospital Nagaoka Niigata Japan
3. Katsumi Seikeigeka Clinic Niigata Japan
4. Division of Orthopedic Surgery Tsubame Rosai Hospital Tsubame Niigata Japan