1. Department of General Surgery (Colorectal Surgery), The Sixth Affiliated Hospital,Sun Yat-sen University , Guangzhou, Guangdong, P. R. China
2. Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital, Sun Yat-sen University , Guangzhou, Guangdong, P. R. China
3. Biomedical Innovation Center, The Sixth Affiliated Hospital, Sun Yat-sen University , Guangzhou, Guangdong, P. R. China
4. Department of Thoracic Surgery, Thoracic Cancer Center, The Sixth Affiliated Hospital, Sun Yat-sen University , Guangzhou, Guangdong, P. R. China
5. School of Medicine (Shenzhen), Sun Yat-sen University , Shenzhen, Guangdong, P. R. China
6. Department of Gastrointestinal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University , Guangzhou, Guangdong, P. R. China