[1] National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital,Department of Colorectal Surgery
[2] Chinese Academy of Medical Sciences and Peking Union Medical College,Department of Gastrointestinal Surgery, Ruijin Hospital
[3] Shanghai Jiao Tong University School of Medicine,Department of General Surgery, Beijing Friendship Hospital
[4] Shanghai Minimally Invasive Surgery Center,Department of General Surgery
[5] Capital Medical University,Department of Gastric and Colorectal Surgery, General Surgery Center
[6] National Clinical Research Center for Digestive Diseases,undefined
[7] Peking University First Hospital,undefined
[8] The First Hospital of Jilin University,undefined