Green, S. L. http://orcid.org/0000-0001-6339-1828
Smith, M. T. D.
Cairns, C.
Clarke, D. L.
Bruce, J.
Bekker, W.
Kong, V.
Laing, G. L.
Article History
First Online: 22 October 2019
Compliance with ethical standards
:
: Ethics approval to maintain this database and to conduct this study has been granted by the Biomedical Research Ethics Committee (BREC) of the University of KwaZulu-Natal (BE221/13; BE 207/09; BE660/18 substudy of BCA221/13).
: Obtained through the University of KwaZulu-Natal Biomedical Research Ethics Committee (BE221/13; BE 207/09; BE660/18 substudy of BCA221/13).
: All data and material are available on request from the corresponding author.
: The authors declare that they have no competing interests.