Funding for this research was provided by:
National Research Foundation (91548)
Received: 11 November 2019
Accepted: 16 June 2020
First Online: 22 June 2020
Ethics approval and consent to participate
: The Human Research Ethics Committee, Faculty of Health Sciences, University of Pretoria, South Africa approved the study (reference number: 547/2015). Consent was obtained from each participant. Consent was also obtained from the Chief Executive Office of each hospital.
: Consent obtained from each patient/person.
: The authors declare no competing interests.