Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;
Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;
Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;
Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;
Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;
Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;
Department of General Surgery The First Affiliated Hospital of Chongqing Medical University Chongqing 400016 China;