Funding for this research was provided by:
Department of Science and Technology, Republic of South Africa (64756)
Received: 20 December 2019
Accepted: 10 December 2020
First Online: 6 January 2021
Ethics approval and consent to participate
: The experimental protocol was evaluated by the Animal Use and Care of the University of Pretoria, ethics clearance number EC044-16.
: Not applicable.
: The authors declared that they have no competing interests.