Text and Data Mining valid from 2020-01-03
Received: 1 October 2019
Accepted: 12 November 2019
First Online: 3 January 2020
Ethics approval and consent to participate
: A written consent was taken before operation in all cases. Owing to the retrospective nature of the study, an IRB number was not required, and the study was approved through expedited review by the scientific/ethical committee of the Surgery Department (Faculty of Medicine, Ain-Shams University).
: Patient identity did not appear in any part of the manuscript; therefore, consent for publication was not required.
: The authors declare that they have no competing interest.