Funding for this research was provided by:
Engineering and Physical Sciences Research Council (GB) and Wellcome Trust (DFR RDV0)
Received: 21 September 2015
Accepted: 15 December 2017
First Online: 23 January 2018
Ethics approval and consent to participate
: The study was approved by the Human Research Ethics Committee of the University of Cape Town (HREC UCT 418/211, 017/2014), the Oxford Tropical Research Ethics Committee (OXTREC 03–12, 13–14), and the Metro District Health Services, Western Cape (RP 141/2011). Trial conduct was overseen by a trial steering committee. All participants provided written informed consent. All the requirements of the Helsinki Declaration of 2008 were fulfilled.
: Not applicable.
: The authors declare that they have no competing interests.
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