1. Department of Orthopaedic Surgery and Rheumatology, National Hospital Organization Nagoya Medical Center, Nagoya, Japan;
2. Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan;
3. Department of Rheumatology, Toyohashi Municipal Hospital, Toyohashi, Japan;
4. Department of Orthopaedic Surgery, Konan Kosei Hospital, Konan, Japan;
5. Department of Rheumatology, Japan Community Healthcare Organization Tokyo Shinjuku Medical Center, Tokyo, Japan;
6. Department of Orthopaedic Surgery, Anjo Kosei Hospital, Anjo, Japan;
7. Department of Orthopedic Surgery and Rheumatology, Toyota Kosei Hospital, Toyota, Japan;
8. Department of Orthopaedic Surgery, Ichinomiya Municipal Hospital, Ichinomiya, Japan;
9. Kato Clinic, Okazaki, Japan;
10. Department of Orthopaedic Surgery, Nagoya Central Hospital, Nagoya, Japan;
11. Department of Rheumatology, Nagano Red Cross Hospital, Nagano, Japan;
12. Ito Seikeigeka, Nagoya, Japan;
13. Shizuoka Kosei Hospital, Shizuoka, Japan;
14. Department of Orthopaedic Surgery, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan;
15. Department of Orthopaedic Surgery, Kariya Toyota General Hospital, Kariya, Japan