1. Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
2. Division of Rheumatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
3. Department of Allergy and Clinical Immunology, Chiba University Hospital, Chiba, Japan
4. Japan Drug Development and Medical Affairs, Eli Lilly Japan K.K, Kobe, Japan