1. Department of Rheumatology, Peking Union Medical College Hospital (PUMCH), Chinese Academy of Medical Sciences, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID) , Key Laboratory of Rheumatology and Clinical Immunology , Ministry of Education, Chinese Rheumatism Data Center (CRDC), Chinese SLE Treatment and Research Group (CSTAR) , Beijing , China of Rheumatology, Peking Union Medical College Hospital , Beijing , China
2. Department of Epidemiology and Biostatistics , Peking Union Medical College , Beijing , China