1. Department of Colorectal Surgery, Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
2. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
3. Laboratory of Surgery, First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
4. Joint Cardiac Surgery Center, First Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, China