1. Department of Rheumatology and Immunology, Peking University People’s Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135) , Beijing
2. Department of Rheumatology and Immunology, Shanghai Jiaotong University School of Medicine, Ruijin Hospital , Shanghai, China
3. Division of Rheumatology, University of Michigan , Ann Arbor, MI
4. Division of Rheumatology, Mayo Clinic , Rochester, MN, USA