1. Department of Pathogen Biology, College of Basic Medical Science, Chongqing Medical University, Chongqing, 400016, P.R. China
2. Department of Infectious Diseases, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
3. International Medical College, Chongqing Medical University, Chongqing, 400016, P.R. China