Text and Data Mining valid from 2019-07-09
Received: 28 March 2019
Accepted: 19 June 2019
First Online: 9 July 2019
Ethics approval and consent to participate
: Prior oral consent was obtained from all participants to the study, and ethics approval was secured from the Stellenbosch University ethics committee (Humanities): Reference: CEE-2018-6251.
: All authors gave consent for publication, and there was no use of personal data in the paper.
: The authors declare that they have no competing interests.