1 Department of Colorectal Surgery, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangzhou, China. yuanzx@mail2.sysu.edu.cn.
2 Guangdong Institute of Gastroenterology, The Sixth Afliated Hospital of Sun Yat-Sen University, Guangzhou, China. yuanzx@mail2.sysu.edu.cn.
3 Clinical Research Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, D4-100, Seattle, WA, 98109, USA. yuanzx@mail2.sysu.edu.cn.
4 Department of Colorectal Surgery, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangzhou, China.
5 Guangdong Institute of Gastroenterology, The Sixth Afliated Hospital of Sun Yat-Sen University, Guangzhou, China.
6 Clinical Research Division, Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N, D4-100, Seattle, WA, 98109, USA. wgrady@fhcrc.org.
7 Department of Colorectal Surgery, Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Guangzhou, China. wang89@mail.sysu.edu.cn.
8 Guangdong Institute of Gastroenterology, The Sixth Afliated Hospital of Sun Yat-Sen University, Guangzhou, China. wang89@mail.sysu.edu.cn.