1. Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Medical Sciences, Nagasaki, Japan
2. Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
3. Innovation Platform and Office for Precision Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan