1 Department of General Surgery, Xiangya Hospital, Central South University (CSU), Hunan, Changsha, China.
2 Department of Gastrointestinal Surgery, Xiangya Hospital, CSU, Hunan, Changsha, China.
3 The Hunan Provincial Key Lab of Precision Diagnosis and Treatment for Gastrointestinal Tumor, Xiangya Hospital, CSU, Hunan, Changsha, China.
4 Department of Colorectal and Anus Surgery, Xiangya Hospital, CSU, Hunan, Changsha, China.
5 International Joint Research Center of Minimally Invasive Endoscopic Technology Equipment & Standardization, Xiangya Hospital, CSU, Hunan, Changsha, China.
6 Department of General Surgery, Xiangya Hospital, Central South University (CSU), Hunan, Changsha, China. zihuachenxy@126.com.
7 Department of Gastrointestinal Surgery, Xiangya Hospital, CSU, Hunan, Changsha, China. zihuachenxy@126.com.
8 The Hunan Provincial Key Lab of Precision Diagnosis and Treatment for Gastrointestinal Tumor, Xiangya Hospital, CSU, Hunan, Changsha, China. zihuachenxy@126.com.
9 International Joint Research Center of Minimally Invasive Endoscopic Technology Equipment & Standardization, Xiangya Hospital, CSU, Hunan, Changsha, China. zihuachenxy@126.com.