1. First Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan,
2. Institute of Rheumatology, Tokyo Women’s Medical University, Tokyo, Japan,
3. Division of Rheumatology, Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan,
4. Inoue Hospital, Gunma, Japan,
5. NHO Osaka Minami Medical Center, Osaka, Japan,
6. Data Center, Product Development, Celltrion, Inc., Incheon, Republic of Korea,
7. Pharmaceuticals Group, Nippon Kayaku Co., Ltd., Tokyo, Japan