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 Medical University, Hefei, Anhui, China
3. Department of Rheumatism and Immunity, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China