1. Department of Microbiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
2. Department of Laboratory, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230032, P.R. China
3. Department of Pediatrics, The People's Hospital of Lu'an City, Lu'an, Anhui 237005, P.R. China