Department of Rheumatology and Immunology Peking University People's Hospital Beijing 100044 China;
Renal Division Peking University First Hospital Peking University Institute of Nephrology Key Laboratory of Renal Disease Ministry of Health of China Beijing 100034 China;
Department of Rheumatology Xuanwu Hospital Capital Medical University Beijing 100053 China;
Department of Rheumatology Guang'anmen Hospital China Academy of Chinese Medical Sciences Beijing 100053 China;
Department of Rheumatology and Immunology Peking University Third Hospital Beijing 100191 China;
Department of Rheumatology West China Hospital Sichuan University Chengdu Sichuan 610041 China;
Department of Rheumatology Drum Tower Hospital Nanjing University Medical School Nanjing Jiangsu 210008 China;