Peking Union Medical College and Chinese Academy of Medical Sciences Beijing 100730 China;
Department of Epidemiology and Bio-statistics Institute of Basic Medical Sciences Chinese Academy of Medical Sciences & Peking Union Medical College Beijing 100005 China;
Department of Rheumatology Peking Union Medical College Hospital (PUMCH) Peking Union Medical College & Chinese Academy of Medical Sciences National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID) Ministry of Science & Technology Key Laboratory of Rheumatology and Clinical Immunology Ministry of Education State Key Laboratory of Complex Severe and Rare Diseases Ministry of Science & Technology Beijing 100730 China;
Department of Rheumatology The Second Affiliated Hospital of Nanchang University Nanchang Jiangxi 330006 China;
Department of Rheumatology The Affiliated Hospital of Inner Mongolia Medical College Hohhot Inner Mongolia 010050 China;
Department of Rheumatology Peking Union Medical College Hospital (PUMCH) Peking Union Medical College & Chinese Academy of Medical Sciences National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID) Ministry of Science & Technology Key Laboratory of Rheumatology and Clinical Immunology Ministry of Education State Key Laboratory of Complex Severe and Rare Diseases Ministry of Science & Technology Beijing 100730 China;