Department of General Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China;
Department of Laparoscopy Surgery, Zibo Central Hospital, Zibo, Shandong 255036, China;
Department of General Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China;
Department of General Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China;
Department of General Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China;
Department of General Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China;
Department of General Surgery, Beijing Shijitan Hospital Affiliated to Capital Medical University, Beijing 100038, China;