1. Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China;
2. Department of Clinical Science of Integrated TCM and Western Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China;
3. Basic Medical College, Hebei North University, Hebei, China;
4. Department of Pathology, Tianjin Union Medical Center, Tianjin, China;
5. Department of Toxicology School of Public Health, Tianjin Medical University, Tianjin, China;
6. Tianjin Union Medical Center, Tianjin, China