1 Department of Rheumatology and Immunology, First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China.
2 Department of Rheumatology and Immunology, First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China. jian_jzhu@126.com.
3 Department of Rheumatology and Immunology, First Medical Center, Chinese PLA General Hospital, 28 Fuxing Road, Haidian District, Beijing, 100853, China. fhuang@301hospital.com.cn.