Article History
Received: 24 October 2017
Accepted: 6 June 2018
First Online: 5 July 2018
Change Date: 23 February 2023
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/s40249-023-01064-5
Authors’ information
: MK is a Medical Doctor and PhD candidate in the department of Public Health Medicine at the University of KwaZulu-Natal; MC is a Professor and Dean of research of Health Sciences in the KwaZulu-Natal University; SM is a Professor at the School of Life Sciences at the University of KwaZulu-Natal, Durban, South Africa.
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.