Received: 3 January 2020
Accepted: 19 March 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: Written informed consent was obtained from all the study participants, and the study was approved by the Ethics Committee of the Alexandria faculty of medicine. (Alexandria, Egypt) (reference number is not applicable and not available).
: Not applicable
: The authors declare that they have no competing interests.