1. Department of Rheumatology, Ren Ji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
2. Department of Pulmonology, Ren Ji Hospital South Campus, Shanghai Jiaotong University School of Medicine, Shanghai, P.R. China
3. Department of Rheumatology and Clinical Immunology, University Hospital Schleswig-Holstein, Campus Lübeck, Lübeck, Germany