1. Division of General Medicine, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
2. Division of Rheumatology, Department of Comprehensive Medicine 1, Saitama Medical Center, Jichi Medical University, Saitama, Japan
3. Divison of Surgery, Department of Comprehensive Medicine 2, Saitama Medical Center, Jichi Medical University, Saitama, Japan
4. Division of Pathology, Department of Comprehensive Medicine 2, Saitama Medical Center, Jichi Medical University, Saitama, Japan
5. Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan