1. Department of Rheumatology, Japan Community Healthcare Organization, Isahaya General Hospital, Isahaya, Japan;
2. Department of Respiratory Medicine, Japan Community Healthcare Organization, Isahaya General Hospital, Isahaya, Japan;
3. Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki, Japan;
4. Department of Immunology and Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan;
5. Rheumatic and Collagen Disease Center, Sasebo Chuo Hospital, Sasebo, Japan