1. Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Japan
2. Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Japan
3. Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Japan
4. National Hospital Organization Nagoya Medical Center, Orthopaedic Surgery and Rheumatology, Japan
5. Department of Orthopaedic Surgery, Kurashiki Sweet Hospital, Japan
6. Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Japan
7. Department of Clinical Immunology, Osaka Metropolitan University Graduate School of Medicine, Japan
8. Miyazaki-Zenjinkai Hospital, Japan
9. Department of Rheumatology, Niigata Rheumatic Center, Japan
10. Kurashiki Central Hospital, Japan
11. Department of Nephrology and Rheumatology, Kyorin University School of Medicine, Japan
12. Department of Rheumatology, Teine Keijinkai Hospital, Japan
13. Department of Rheumatology Research, Clinical Research Center for Allergy and Rheumatology, National Hospital Organization Sagamihara National Hospital, Japan
14. Department of Rehabilitation Medicine, Kanazawa Medical University, Japan
15. Department of Advanced Medicine for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Japan
16. Department of Rheumatology and Clinical Immunology, Graduate School of Medicine, Kyoto University, Japan
17. Department of Orthopaedic Surgery, Science of Functional Recovery and Reconstruction, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Japan
18. Department of Orthopaedic Surgery and Rheumatology, Nagoya University Graduate School of Medicine, Japan
19. Division of Rheumatology, Department of Internal Medicine, Tokyo Women's Medical University School of Medicine, Japan
20. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Japan