1. Department of Orthopedic Surgery, Nagoya University Hospital, Nagoya, Japan
2. Department of Rheumatology, Niigata Rheumatic Center, Niigata, Japan
3. Department of Orthopedic Surgery, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
4. Department of Rehabilitation Medicine, The University of Tokyo Hospital, Tokyo, Japan
5. Department of Orthopedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
6. Department of Orthopedic Surgery, Yukioka Hospital, Osaka, Japan
7. Department of Rheumatology, National Hospital Organization Osaka Minami Medical Center, Kawachinagano, Japan
8. Department of Orthopedic Surgery, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
9. Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
10. Department of Orthopedic Surgery, University of Toyama, Faculty of Medicine, Toyama, Japan
11. Shijonawate Gakuen University, Osaka, Japan
12. Department of Orthopedic Surgery, Saitama Medical University, Morohongo Moroyama, Japan
13. Department of Orthopedic Surgery, Kariya-Toyota General Hospital, Kariya, Japan
14. Department of Medical Education, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan