1. Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
2. Fujian Province Minimally Invasive Medical Center, Fuzhou, China
3. Laboratory of Gastrointestinal Cancer (Fujian Medical University), Ministry of Education, Fuzhou, China
4. Fujian Key Laboratory of Tumor Microbiology, Department of Medical Microbiology, Fujian Medical University, Fuzhou, China