Received: 21 July 2021
Accepted: 9 September 2021
First Online: 23 September 2021
: This study was conducted in concordance with declaration of Helsinki and each participant signed a written informed consent before being enrolled in the study. The institutional review board (IRB) approval was obtained from the ethical committee of Faculty of Medicine for boys, Al-Azhar University, Cairo on 14th April, 2020. There was no reference number provided by our IRB.
: Not applicable.
: The authors declare that they have no competing interests.