Funding for this research was provided by:
National Research Foundation
Article History
Received: 19 April 2018
Accepted: 22 October 2018
First Online: 20 November 2018
Ethics approval and consent to participate
: The study was done in accordance with the International Standards of Care and Use of Animals in Research and was approved by the Animal Ethics Screening Committee (AESC) of the University of the Witwatersrand, Johannesburg, South Africa (Ethics clearance number: 2014/47/D).
: All authors consented to the publication of the data.
: The authors declare that they have no competing interests.
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