Affiliation: | 1. Department of Gastrointestinal and Breast Surgery,the Affiliated Cancer Hospital of Guangxi Medical University,Nanning 530021, Guangxi Zhuang Autonomous Region, China 2. Department of Endoscope, the Affiliated Cancer Hospital of Guangxi Medical University, Nanning 530021,Guangxi Zhuang Autonomous Region, China 3. Department of Gastrointestinal Surgery,Guangxi Zhuang Autonomous Region Hospital, Nanning 530021,Guangxi Zhuang Autonomous Region, China |