Received: 2 April 2021
Accepted: 14 June 2021
First Online: 28 June 2021
: The study was conducted according to the guidelines of the Declaration of Helsinki, and approved by the Ethical Review Committee of Faculty of Medicine, Ain Shams University (FMASUP18b/2020). Informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.