Received: 9 June 2021
Accepted: 21 October 2021
First Online: 3 November 2021
: All methods were carried out in accordance with relevant guidelines and regulations. Since this was a retrospective review of an existing database, informed consent was waived by the Institutional Review Board. The study was approved by the Human Research Ethics Committee (HREC) of the University of the Witwatersrand (clearance certificate number M190873).
: Not applicable.
: The research for this study was done in partial fulfillment of HM’s undergraduate degree at the University of Gothenburg, Gothenburg, Sweden. This was performed during a research elective to the University of the Witwatersrand, Johannesburg, South Africa.