Funding for this research was provided by:
National Health Laboratory Service K-fund (KNC174)
Received: 7 August 2020
Accepted: 29 November 2020
First Online: 9 December 2020
Ethics approval and consent to participate
: Ethics approval was granted by the Stellenbosch University Health Research Ethics Committee (HREC) (Project ID: 2521 Ethics Reference #: S16/10/217), with waiver of consent.
: Consent was waivered as this was a retrospective folder review.
: The authors have no conflicts of interest/ competing interests.