Received: 3 June 2020
Accepted: 10 July 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the ethical committee of the Faculty of Medicine, Ain Shams University. Ethical approval reference number FMASU MD214/2018. Written informed consent was taken from all subjects before participating in this study.
: Not applicable
: The authors declare that they have no competing interests.