1. Department of Rheumatology and Clinical Immunology National Clinical Research Center for Dermatologic and Immunologic Diseases the Ministry of Education Key Laboratory Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 P. R. China
2. Clinical Immunology Center Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 P. R. China
3. State Key Laboratory of Difficult, Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 P. R. China
4. Department of Medical Records Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 P. R. China
5. Department of Rheumatology National Center of Gerontology Institute of Geriatric Medicine Beijing Hospital Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100730 P. R. China