Received: 22 March 2022
Accepted: 31 October 2022
First Online: 21 November 2022
: The authors confirm that confirm that all methods were carried out in accordance with relevant guidelines and regulations. The protocol for recruitment, data and sample collection for the study was approved by the University of Pretoria Research Ethics Committee (UP17/05/01, 22 July 2019). Informed consent and informed assent were obtained from parents and adolescents, respectively. Research governance approval was done via institutional peer review.
: Not applicable.
: The authors declare that they have no competing interests.