1. Department of Internal Medicine III, Shimane University , Izumo, Japan
2. Department of Rheumatology, Shimane University Faculty of Medicine , Izumo, Japan
3. Department of Rheumatology, Tamatsukuri Hospital , Matsue, Japan
4. Division of Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University , Kagawa, Japan
5. National Hospital Organization Hamada Medical Center , Hamada, Japan
6. Division of Rheumatology, Masuda Medical Association Hospital , Masuda, Japan
7. Rheumatic Disease Center, Kurashiki Medical center , Kurashiki, Japan
8. Division of Respiratory Medicine and Rheumatology, Department of Multidisciplinary Internal Medicine, Faculty of Medicine, Tottori University , Yonago, Japan
9. Department of Rheumatology, Tottori Prefecture Central Hospital , Tottori, Japan
10. Division of Rheumatology, Oda Municipal Hospital , Oda, Japan
11. Sugiura Clnic , Izumo, Japan
12. Utazu Hospital , Kagawa, Japan
13. Department of Allergy & Rheumatology, Shimane Central Hospital , Izumo, Japan
14. Department of Gynecology, Faculty of Medicine Shimane University , Izumo, Japan