Received: 22 April 2020
Accepted: 27 May 2020
First Online: 15 June 2020
Ethics approval and consent to participate
: • Done and the study was submitted to and approved by our ethics committee of Faculty of Medicine, Alexandria University.• Ethics committee’s reference number: not available• Formal written consent was taken from all participants
: Consent was taken from all participants.
: The authors declare that they have no competing interests.