1. Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
2. Laboratory of Tissue and Cell Biology, Lab Teaching & Management Center, Chongqing Medical University, Chongqing, China
3. Pathogen Biology and Immunology Laboratory, Lab Teaching & Management Center, Chongqing Medical University, Chongqing, China
4. Department of Microbiology and Biochemical Pharmacy, National Engineering Research Center of Immunological Products, Third Military Medical University, Chongqing, China