VIDEO CORRESPONDENCE Anqi Wang, Anqi Wang Division of Colorectal Surgery, Changzheng Hospital, Navy Medical University, No. 415, Fengyang Road, Shanghai, 200003 P.R. China The two authors contribute equally to this work Search for more papers by this author Ce Bian, Ce Bian Division of Colorectal Surgery, Changzheng Hospital, Navy Medical University, No. 415, Fengyang Road, Shanghai, 200003 P.R. China The two authors contribute equally to this work Search for more papers by this author...