1. Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Rheumatology, Ministry of Education, National Clinical Research Center for Dermatologic and Immunologic Diseases, State Key Laboratory of Complex Severe and Rare Diseases , Beijing
2. Department of Rheumatology, Heping Hospital Affiliated to Changzhi Medical College, Chang Zhi, Shan Xi, China