Text and Data Mining valid from 2019-02-20
Received: 22 March 2018
Accepted: 12 February 2019
First Online: 20 February 2019
Ethics approval and consent to participate
: Ethical approval for the research was granted by Govan Mbeki Research and Development Centre (GMRDC), University of Fort Hare (UFH). Ethical clearance was granted by the Ministry of Health and Social Services (Namibia) and the Department of Health, Eastern Cape (South Africa). Written informed consent was obtained from each participant prior to sample collection which was carried out by qualified midwives.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.