Published on in Vol 8, No 1 (2020): January
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/14036, first published
.
1 School of Pharmacy, Sefako Makgatho Health Sciences University, Ga-Rankuwa, South Africa
2 Department of Speech Pathology and Audiology, University of the Witwatersrand, Johannesburg, South Africa
*these authors contributed equally