1. Department of Clinical Laboratory, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
2. Anhui Province Key Laboratory of Immunology in Chronic Diseases, Anhui Key Laboratory of Infection and Immunity, School of Laboratory Medicine, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China
3. The Infectious Disease Hospital of Bengbu City, Bengbu, Anhui 233000, P.R. China
4. Department of Histology and Embryology, Bengbu Medical College, Bengbu, Anhui 233000, P.R. China