1. Department of Internal Medicine (IV), Division of Rheumatology, Osaka Medical and Pharmaceutical University, Osaka 569-8686, Japan
2. Department of Health Information Management, Kurashiki Sweet Hospital, Okayama 710-0016, Japan
3. Department of Rheumatology and Clinical Immunology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
4. Department of Advanced Medicine for Rheumatic Diseases, Graduate School of Medicine, Kyoto University, Kyoto 606-8303, Japan
5. First Department of Internal Medicine, Kansai Medical University, Osaka 573-1191, Japan
6. Rheumatology Clinic and Department of Orthopaedic Surgery, Nara Medical University, Nara 634-8521, Japan
7. Department of Rheumatology, Nishinomiya Municipal Central Hospital, Nishinomiya 663-8014, Japan
8. Department of Musculoskeletal Regenerative Medicine, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan
9. Department of Rheumatology, Osaka Red Cross Hospital, Osaka 543-0027, Japan
10. Department of Clinical Immunology, Graduate School of Medicine, Osaka Metropolitan University, Osaka 545-8585, Japan