Funding for this research was provided by:
Department for International Development (201446)
Text and Data Mining valid from 2019-02-25
Received: 26 September 2018
Accepted: 21 January 2019
First Online: 25 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: Informed consent was given by all participants before their inclusion in the study. Personal details of participants were omitted from the data. The original cluster randomised controlled trial was approved by the Institutional Review Boards of the UCLA (G07-02-022) and Stellenbosch University Institutional Review Board (N08/08/218). This study was approved by the University of Cape Town (HREC REF 835/2015).