1. Department of Rheumatology and General Internal Medicine, Nagasaki Medical Center, Japan
2. Department of Gastroenterology, Nagasaki Medical Center, Japan
3. Department of Immunology and Rheumatology, Unit of Translational Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Japan
4. Department of Rheumatology, Fukushima Medical University School of Medicine, Japan