1. Nankai University School of Medicine Nankai University Tianjin China
2. Department of Colorectal Surgery Tianjin Union Medical Center Tianjin China
3. Tianjin Institute of Coloproctology Tianjin China
4. The Institute of Translational Medicine Tianjin Union Medical Center of Nankai University Tianjin China
5. Center for Applied Mathematics Tianjin University Tianjin China
6. Department of Pathology Tianjin Union Medical Center Tianjin China