1 Department of Rheumatology and Immunology, Changzheng Hospital, Naval Medical University, Shanghai, China.
2 School of Medicine, Tsinghua University, Beijing, China.
3 Changzheng Hospital, Naval Medical University, Shanghai, China.
4 Naval Medical University, Shanghai, China.
5 Department of Rheumatology and Immunology, Changzheng Hospital, Naval Medical University, Shanghai, China; School of Medicine, Tsinghua University, Beijing, China. Electronic address: xuhuji@smmu.edu.cn.