Received: 12 July 2019
Accepted: 24 August 2020
First Online: 29 September 2020
Ethics approval and consent to participate
: The study was approved by Faculty of Medicine Ain-Shams University (FMASU) Research Ethics Committee (REC) on 26/6/2016 with reference number 156/2016. The FMASU REC operated according to guidelines of the International Council on Harmonization and the Islamic Organization for Medical Sciences, the United States Office for Human Research Protections and the United States Code of Federal Regulations and operates under Federal Wide Assurance No., FWA 000017585.
: A written consent was obtained from all participants; described below in details.
: The authors declare that they have no competing interest.