1. Department of Infectious Disease, Tianjin First Center Hospital, Tianjin 300192, P.R. China
2. Laboratory of Microbiology of Tianjin First Center Hospital, Tianjin 300192, P.R. China
3. Department of Transplantation, Tianjin First Center Hospital, Tianjin 300192, P.R. China
4. Department of Pharmacy, Tianjin First Center Hospital, Tianjin 300192, P.R. China