1Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
2Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
#Contributed equally to this work
*Corresponding Author:
Jia Ke, Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University 26 Yuancun Erheng Rd, Guangzhou, Guangdong, PR China, Tel: 011-86-020-38254009, Fax: 011-86-020-38254166 Email: