1. Department of Gastroenterological Surgery Sun Yat‐sen Memorial hospital Sun Yat‐sen University Guangzhou China
2. Departments of Gastroenterological Surgery and Hernia Center The Sixth Affiliated Hospital Sun Yat‐sen University Guangzhou China
3. Department of Gastroenterological Surgery Guangzhou First People's Hospital Guangzhou Medical University Guangzhou Digestive Disease Center Guangzhou China
4. Department of Radiology The First Affiliated Hospital Sun Yat‐sen University Guangzhou China