Received: 28 April 2020
Accepted: 20 August 2020
First Online: 15 September 2020
Ethics approval and consent to participate
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (Institutional Review Board <i>(IRB)</i><b>”</b> of Alexandria General Hospital on 14th February 2017) and with the Helsinki Declaration of 1964 and later versions. Committee’s reference number is unavailable (NOT applicable). No consent was obtained from the patients since it was a retrospective study.
: This was not needed, as the study is “retrospective.”
: The authors declare that they have no competing interests.