1. Department of Clinical Epidemiology, Kochi Medical School , Nankoku, Japan
2. Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama, Japan
3. Department of Nephrology and Rheumatology, Kyorin University School of Medicine , Tokyo, Japan
4. Division of Multidisciplinary Management of Rheumatic Diseases, Tokyo Women’s Medical University School of Medicine , Tokyo, Japan
5. Division of Rheumatology, Department of Internal Medicine, Tokyo Women’s Medical University School of Medicine , Tokyo, Japan
6. Department of Allergy and Clinical Immunology, Chiba University , Chiba, Japan
7. Department of Rheumatology, Ome Municipal General Hospital , Ome, Japan
8. Department of Rheumatology, Tokyo Medical and Dental University , Tokyo, Japan
9. Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine , Tokyo, Japan
10. Department of Nephrology, Graduate School of Medicine, Fujita Health University , Toyoake, Japan
11. Department of Rheumatology and Clinical Immunology, Saitama Medical Center, Saitama Medical University , Kawagoe, Japan
12. Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University , Kagawa, Japan
13. Department of Nephrology and Rheumatology, Gunma University Graduate School of Medicine , Maebashi, Japan
14. Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University , Tochigi, Japan
15. Kanazawa University , Kanazawa, Japan
16. Kichijoji Asahi Hospital , Musashino, Japan
17. Okayama University , Okayama, Japan