Funding for this research was provided by:
National Research Foundation
Article History
Received: 16 August 2018
Accepted: 8 March 2019
First Online: 14 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All applicable international, national and/or institutional (University of Cape Town) guidelines for the care and use of animals were followed. Due to the observational nature of the study, animal ethics approval was not required.