Received: 19 October 2019
Accepted: 4 May 2020
First Online: 15 May 2020
Ethics approval and consent to participate
: Ethical approval was obtained from The College of Medicine Research Ethics Committee (COMREC Reference No: P.05/18/2394). Individual informed consent was not sought since the study used fully anonymized retrospective data.
: Not applicable.
: The authors declare that they have no conflict of interest.