Text and Data Mining valid from 2020-04-09
Received: 18 November 2019
Accepted: 30 March 2020
First Online: 9 April 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of the University of KwaZulu-Natal. Consent to participate – not applicable. Gatekeeper permission was obtained from KEH to access data used in this analysis.
: Not applicable.
: The authors declare no competing interests.