Funding for this research was provided by:
Universiteit Stellenbosch (ZA)
University of Bath
Article History
Accepted: 17 September 2018
First Online: 22 September 2018
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest to disclose.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.