Text and Data Mining valid from 2019-11-06
Received: 12 June 2019
Accepted: 24 October 2019
First Online: 6 November 2019
Ethics approval and consent to participate
: This study is a part of the larger study. The approval for the larger study was obtained from the research ethics committee of the University of the Western Cape, Cape Town, South Africa. (BM/16/4/4). A written consent was obtained from all the participants.
: Not applicable.
: The authors declare that they have no competing interests.