Funding for this research was provided by:
National Research Foundation (12082)
Received: 12 November 2020
Accepted: 14 January 2021
First Online: 26 January 2021
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: Ethic was received from the University of KwaZulu-Natal’s Biomedical Research Ethics Committee. Ethics No. BE322/19.