Funding for this research was provided by:
University of Free State (2003062094)
Universiteit van die Vrystaat (2003062094)
Received: 23 March 2020
Accepted: 22 November 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Health Sciences Research Ethics Committee of the University of Free State. The ethical clearance number is UFS-HSD2017/1545.
: Not applicable.
: The authors declare that they have no competing interest.