1. Department of Immunology and Rheumatology, Graduate School of Biomedical Sciences, Nagasaki University, Japan
2. Department of Rheumatology, Leiden University Medical Center, The Netherlands
3. Department of Public Health, Graduate School of Biomedical Sciences, Nagasaki University, Japan
4. Department of Radiological Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Japan