Received: 15 March 2019
Accepted: 19 August 2019
First Online: 28 August 2019
Ethics approval and consent to participate
: This survey was reviewed by both the Research Ethics Committee, Faculty of Health Science, University of Pretoria (Ethics Reference Number: 146/2016) and the Medical Research Council of Zimbabwe (MRCZ/A/2135). Written informed consent from all participants and parents (of those students under the age of 18 years) was sought before data collection.
: Written consent was obtained from all the participants for their responses to be published in this study.
: The authors declare that they have no competing interests.