1. Department of Rheumatology, Tokyo Women’s Medical University School of Medicine, Tokyo, Japan
2. Keyaki Total Clinic, Chiba, Japan
3. Research Administration Center, Showa University, Tokyo, Japan
4. Department of Orthopedics, Tokyo Women’s Medical University School of Medicine, Tokyo, Japan
5. Center for Rheumatic Diseases, Mie University Hospital, Mie, Japan
6. Rheumatology, Sanno Medical Center, Tokyo, Japan