Funding for this research was provided by:
South African Medical Research Council (Adolescent Mental Health & Drug Abuse grant)
Received: 26 September 2019
Accepted: 27 April 2020
First Online: 13 May 2020
Ethics approval and consent to participate
: This study received the Institutional ethical clearance and approval from the Sefako Makgatho Health Sciences University Research Committee reference number SMUREC/H/271:2017:IR. All participants signed an informed consent form before participation.
: Not applicable.
: The authors declare that they have no competing interests.