Statistics from Altmetric.com
Contributors WV and CR collected and entered data. CR, MIL, WV and JCB analysed the data. JCB drafted the first version of the manuscript. All other authors (MIL, CR, SH, NB, EV and WV) provided feedback. JCB revised the manuscript, with edits and submitted the manuscript.
Competing interests None.
Ethics approval University of Cape Town Human Research Ethics Committee.
Provenance and peer review Not commissioned; externally peer reviewed.
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