1 Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China; Department of Rheumatology and Immunology, People's Hospital, Xinyi 221400, China.
2 Department of Rheumatology and Immunology, People's Hospital, Xinyi 221400, China.
3 Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China.