Esan, Temitope A.
Schepartz, Lynne A. http://orcid.org/0000-0003-1379-0817
Funding for this research was provided by:
University of the Witwatersrand, Johannesburg
Article History
Received: 21 December 2017
Accepted: 8 November 2018
First Online: 26 November 2018
Compliance with ethical standards
: Ethical approval (No. M141001) was obtained from the Human Research Ethics Committee (Medical) of the University of the Witwatersrand. Permission to carry out the study on the school children was obtained from the local education authority and respective school heads. Consent was obtained from the parents while assent was obtained from the children.
: The authors declare that they have no conflicts of interest.