1. Department of Nephrology and Rheumatology, Iwate Prefectural Central Hospital , Morioka, Japan
2. Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences , Okayama, Japan
3. Department of Clinical Epidemiology, Kochi Medical School, Kochi University , Nankoku, Japan
4. Department of Rheumatology, Tokyo Women’s Medical University School of Medicine , Tokyo, Japan
5. Department of Rheumatology and Clinical Immunology, Saitama Medical Centre, Saitama Medical University , Saitama, Japan
6. Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University , Miki, Japan
7. Department of Rheumatology, Endocrinology and Nephrology, Faculty of Medicine, Hokkaido University , Sapporo, Japan
8. Department of Nephrology, Fujita Health University School of Medicine , Toyoake, Japan
9. Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, Miyazaki University , Miyazaki, Japan
10. Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology , Tokyo, Japan
11. Division of Rheumatology & Allergology, Department of Internal Medicine, St. Marianna University School of Medicine , Kawasaki, Japan
12. Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine , Tokyo, Japan
13. Nephrology and Rheumatology, First Department of Internal Medicine, Kyorin University School of Medicine , Tokyo, Japan
14. Department of Internal Medicine, Kichijoji Asahi Hospital , Tokyo, Japan
15. The president, Okayama University , Okayama, Japan