1. Hirose Clinic of Rheumatology, Saitama, Japan;
2. Division of Epidemiology and Pharmacoepidemiology of Rheumatic Diseases, Institute of Rheumatology, Tokyo Women’s Medical University, Tokyo, Japan;
3. Division of Respiratory Medicine, Fukujuji Hospital, Japan Anti-Tuberculosis Society, Tokyo, Japan;
4. Department of Internal Medicine, Division of Rheumatology, National Defense Medical College, Saitama, Japan;
5. Department of Pharmacology, National Defense Medical College, Saitama, Japan;
6. Department of Internal Medicine, Division of Rheumatology, Toho University School of Medicine, Tokyo, Japan