1. Rheumatic and Collagen Disease Center, Sasebo Chuo Hospital, Sasebo, Japan;
2. Department of Frontier Life Science, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;
3. Department of Public Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;
4. Department of Rheumatology and Immunology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan