1. Department of Gastrointestinal Surgery; The Sixth Affiliated Hospital (Guangdong Gastrointestinal and Anal Hospital); Sun Yat-Sen University; Guangzhou China
2. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases; The Sixth Affiliated Hospital; Sun Yat-sen University; Guangzhou China
3. Guangdong Institute of Gastroenterology; Guangzhou China