Received: 5 December 2021
Accepted: 9 June 2022
First Online: 15 June 2022
: Ethics approval of the research protocol was obtained from the University of Pretoria Health Sciences Research Ethics committee (ref 267/2017) before commencement of the study and research was conducted in accordance with the Declaration of Helsinki. Permission to access records was obtained from the CEO of the hospital and the need for informed consent was waived by the REC based on the retrospective nature of the study.
: Consent for publication was included in the Ethics approval.
: The authors have no conflicts of interest to declare.