1. Department of Epidemiology and Biostatistics; School of Public Health; Anhui Medical University; Hefei Anhui China
2. The Key Laboratory of Major Autoimmune Diseases, Anhui Province; Hefei Anhui China
3. Department of Rheumatology; Anhui Provincial Hospital; Hefei Anhui China
4. Department of Nephrology; The Second Affiliated Hospital of Anhui Medical University; Hefei Anhui China