1. Department of Gastrointestinal Surgery, Xiamen Cancer Hospital, First Affiliated Hospital of Xiamen University, Xiamen, China
2. Department of Gastrointestinal Surgery, First Clinical Medical College of Fujian Medical University, Fuzhou, China
3. Department of General Surgery, Xiamen Haicang Hospital, Xiamen, China
4. Department of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
5. Department of Medical Oncology, Xiamen Cancer Hospital, First Affiliated Hospital of Xiamen University, Xiamen, China