1. First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan;
2. Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan;
3. Division of Allergy & Rheumatology, St. Luke’s International Hospital, Tokyo, Japan;
4. Department of Rheumatology and Hematology, Tohoku University Hospital, Miyagi, Japan;
5. Department of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan;
6. Department of Inflammation & Pain Control Research, Toho University School of Medicine, Tokyo, Japan;
7. Division of Rheumatology and Clinical Immunology, Department of Medicine, Jichi Medical University, Tochigi, Japan;
8. Research and Development, AstraZeneca K.K., Osaka, Japan;
9. Global Medicine Division, AstraZeneca Pharmaceuticals, Gaithersburg, MD, USA