Received: 1 July 2021
Accepted: 14 October 2021
First Online: 29 October 2021
Change Date: 22 November 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s12913-021-07271-w
: Approval to conduct the study was provided by the University of Witwatersrand Human Research Ethics Committee (Reference number: 190702). The study was also approved by the Ekurhuleni Health District Department of Health and City of Ekurhuleni Health and Social Development. Informed consent to participate was obtained from all participants aged 18 years and above, and from legal guardian(s) for participants below 18 years of age. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Not applicable.
: The authors declare that they have no competing interests.