1 Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
2 Department of Cardiology, China-Japan Union Hospital of Jilin University, Changchun, 130033, China.
3 Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China. cff@jlu.edu.cn.
4 Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, 130033, China. fangxd@jlu.edu.cn.