1 Department of Gastrointestinal Surgery, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China.
2 Department of Gynecology, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China.
3 Department of Gastrointestinal Surgery, Chongqing University Three Gorges Hospital, Wanzhou, Chongqing, China. Electronic address: 1208505185@qq.com.