Article History
Received: 18 December 2017
Accepted: 15 May 2018
First Online: 21 May 2018
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: The AnimCare animal research ethics committee of North-West University approved (NWU-00378-16-A5) the animal protocols used here. All animals were maintained and all procedures performed in accordance with the code of ethics in research, training and testing of drugs in South Africa and complied with national legislation.