1. Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China.
2. Department of General Surgery, Fujian Medical University Union Hospital, Fuzhou, China.
3. Department of Digestive Surgery, St. Mary's Hospital, University of Perugia, Terni, Italy.
4. Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China.
5. Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fuzhou, China.