Received: 1 January 2021
Accepted: 27 September 2021
First Online: 19 October 2021
: Ethics approval was given by the National Health Group Domain Specific Ethics Review Board (NHG DSRB ref. 2020/00001). The study is a retrospective review of existing data. Therefore, waiver of consent to participate was granted. Administrative permissions were given to access the raw data used in the study. This was in the ethics application for access to the raw data. The data used in the study was anonymised before its use.
: Not applicable as the manuscript does not involve any identifiable personal data.
: The authors have no conflicts of interest to declare that are relevant to the content of this article.