1. Division of Rheumatology, Department of Internal Medicine, School of Medicine, Keio University, Tokyo, Japan
2. Department of Medicine and Rheumatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
3. Pfizer, Collegeville, PA, USA
4. Clinical Statistics, Biometrics, and Data Management, Pfizer R&D Japan, Tokyo, Japan
5. Immunology & Inflammation Medical Affairs, Innovative Medicines Business, Pfizer Japan Inc, Tokyo, Japan