Received: 23 January 2020
Accepted: 2 June 2020
First Online: 21 July 2020
Ethics approval and consent to participate
: Approval of the ethical committee of Ain Shams University, faculty of medicine was obtained before the start of the study, but the reference number is not available. All patients gave a written informed consent to participate in the study.
: The authors declare that they have no competing interests.
: Not applicable.