Received: 23 July 2019
Accepted: 24 January 2020
First Online: 4 February 2020
Ethics approval and consent to participate
: Ethics approval was obtained from the University of KwaZulu-Natal Biomedical Research Ethics Committee (BREC) (reference number: BFC555/17). Informed written consent will be obtained from the learner participants and their parents, including all other study participants.
: Once recruitment commences consent for publication will be sought from all participants.
: The authors declare that they have no competing interests.