Text and Data Mining valid from 2020-04-23
Received: 21 January 2020
Accepted: 1 April 2020
First Online: 23 April 2020
Ethics approval and consent to participate
: This study was approved by the Review Board of the Department of General Surgery, Faculty of Medicine, Tanta University, Egypt, on 15 June 2019, but the consent to participate was not applicable as it is a retrospective study. The ethical committee reference number: 2938/12/14.
: Not applicable as it is a retrospective study.
: All authors have no conflicts of interest or financial ties to disclose. Contents have not published elsewhere, and the paper is not being submitted elsewhere.