Article History
Received: 1 March 2018
Accepted: 4 June 2018
First Online: 20 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in the study were in accordance with the 1964 Helsinki declaration (and its later amendments or comparable ethical standards) as well as the ethical standards of the institutional committee. Ethics clearance was obtained from the University of Cape Town’s Faculty of Health Sciences Human Research Ethics Committee (HREC/Ref:134/2015) prior to the commencement of the study.
: Informed consent was obtained from all individual participants included in the study.