1. Department of Rheumatology and Immunology Peking University People's Hospital Beijing China
2. Institute of Medicine, Chung Shan Medical University Taichung Taiwan
3. School of Medicine Chung Shan Medical University Taichung Taiwan
4. Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine Chung Shan Medical University Hospital Taichung Taiwan
5. Peking University People's Hospital Qingdao China