Received: 31 January 2020
Accepted: 28 May 2020
First Online: 10 August 2020
Ethics approval and consent to participate
: Approval was obtained from the Ethics Committee of Faculty of Medicine, Ain Shams University (FWA 000017585). Informed written consent was obtained from each participant before enrollment in the study. This study was performed in accordance with the 1975 principles of the Declaration of Helsinki and its appendices.
: Not applicable
: The authors declare that they have no competing interests.