1. Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical UniversityHefei, Anhui, China
2. Department of Clinical Laboratory, the First Affiliated Hospital of Anhui Medical UniversityHefei, Anhui, China
3. Anhui Province Key Laboratory of Major Autoimmune Diseases, Hefei, Anhui, China
4. Department of Rheumatology and Immunology, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China