Received: 1 June 2020
Accepted: 13 July 2020
First Online: 5 August 2020
Ethics approval and consent to participate
: Approval of research ethical committee of Faculty of Medicine, Ain-Shams University was obtained (code number: FMASU M D 32/2018) and informed consent was obtained from patients or their first degree relatives.
: Not applicable.
: The authors declare that they have no competing interests.