1. Department of Rheumatology, Ome Municipal General Hospital , Ome, Japan
2. Department of Rheumatology, Tokyo Medical and Dental University (TMDU) , Tokyo, Japan
3. Department of Nephrology and Rheumatology, Kyorin University School of Medicine , Tokyo, Japan
4. Department of Family Medicine, Seibo International Catholic Hospital , Tokyo, Japan
5. Department of Otolaryngology-Head & Neck Surgery, Asahikawa Medical University , Asahikawa, Japan
6. Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University , Kagawa, Japan
7. Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine , Maebashi, Japan
8. Division of Dermatology, Tohoku Medical and Pharmaceutical University , Sendai, Japan
9. Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University , Tochigi, Japan
10. Kanazawa University , Kanazawa, Japan
11. Department of Rheumatology and Clinical Immunology, Saitama Medical Center, Saitama Medical University , Kawagoe, Japan
12. Department of Internal Medicine III, Shimane University Faculty of Medicine , Izumo, Japan
13. Division of Rheumatology, Department of Internal Medicine, Tokyo Women’s Medical University School of Medicine , Tokyo, Japan
14. Department of Clinical Epidemiology, Kochi Medical School , Nankoku, Japan
15. Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama, Japan