1. Department of General Surgery, Guangdong General Hospital; Guangdong Academy of Medical Sciences, Guangzhou, PR China
2. Department of Medical College, South China University of Technology, Ganzhou, PR China
3. Department of Gastric Surgery, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center for Cancer Medicine, Guangzhou, PR China
4. Department of Gastroenterology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
5. Department of Gastrointestinal Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, PR China
6. Department of Gastroenterology, Nanfang Hospital of Southern Medical University; Guangdong Provincial Key Laboratory of Gastroenterology, Guangzhou, PR China