Received: 13 January 2020
Accepted: 20 July 2020
First Online: 3 October 2020
Ethics approval and consent to participate
: All procedures performed were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Cairo University - Faculty of Medicine - Research Ethics Committee on 12/03/2014. [Committee’s reference number 12032014]. A written Informed consent was obtained from all patients included in the study.
: Not applicable.
: Prof Ashraf Mosharafa, Editor-in-Chief of the journal confirms that he was not involved in the editorial processing or peer review process for this manuscript. The authors declare that they have no conflict of interest.