1. Department of Rehabilitation Sciences and
2. Department of Immunology and Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University, Japan,
3. Department of Rheumatology, Aino Memorial Hospital, Japan,
4. Department of Rheumatology, Miyashita Rheumatology Clinic, Japan,
5. Department of Rheumatology, National Hospital Organization Nagasaki Medical Center, Japan,
6. Department of Rheumatology, Nagasaki Kita Hospital, Japan,
7. Department of Rheumatology, National Hospital Organization Ureshino Medical Center, Japan,
8. Department of Rheumatology, Sasebo Chuo Hospital, Japan, and
9. Department of Rheumatology, Koga Hospital 21, Japan