1. Department of Gastrointestinal Surgery, Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou 510000, China
2. School of Medicine, South China University of Technology, Guangzhou 510006, China
3. Department of General Surgery, Guangdong Provincial People’s Hospital Ganzhou Hospital (Ganzhou Municipal Hospital), Ganzhou 341000, China
4. The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510000, China