Funding for this research was provided by:
National Research Foundation of South Africa (90562, 105636)
Article History
Received: 3 August 2020
Accepted: 8 February 2021
First Online: 20 February 2021
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: Ethics approval for the study was obtained from the Health Research Ethics Committee of the North-West University (NWU-00128-14-A1).
: Informed consent was obtained from all individual participants included in the study.
: All authors have given approval to the final version of the manuscript.