1. Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
2. Clinical Research Center National Hospital Organization Nagasaki Medical Center Omura Japan
3. Department of Rheumatology Sasebo Chuo Hospital Sasebo Japan
4. Department of General and Internal Medicine National Hospital Organization Nagasaki Medical Center Omura Japan
5. Department of Rheumatology Sasebo City Medical Center Sasebo Japan