1. Department of Internal Medicine and Rheumatology, Juntendo University Faculty of Medicine , Tokyo, Japan
2. Division of Hematology, Rheumatology and Respiratory Medicine Department of Internal Medicine, Faculty of Medicine, Kagawa University , Kagawa, Japan
3. Department of Endocrinology, Metabolism, Nephrology and Rheumatology, Kochi Medical School Hospital, Kochi University , Nankoku, Japan
4. Department of Rheumatology and Orthopaedics Surgery, Chiyoda Hospital , Miyazaki, Japan
5. Japan Drug Development and Medical Affairs, Eli Lilly Japan K.K. , Kobe, Japan
6. Department of Orthopedic Surgery, Juntendo University Faculty of Medicine , Tokyo, Japan
7. Department of Internal Medicine, Juntendo Koshigaya Hospital , Saitama, Japan