Funding for this research was provided by:
Department for International Development (202037)
Received: 8 May 2017
Accepted: 29 December 2017
First Online: 1 February 2018
Ethics approval and consent to participate
: The study was approved by the National Health Science Research Committee in Malawi (Protocol number 889), the Joint Clinical Research Centre Institutional Review Board, and National Council for Science and Technology in Uganda (Protocol number HS 1039) and the Medical Research Council in Zimbabwe (Protocol number MRCZ/A/1630). Written informed consent was obtained from study participants. Rules for informed consent, privacy and confidentiality were followed at all times; data collection and consent procedures were reviewed and approved by each national ethics committee.
: Written informed consent was obtained from study participants.
: The authors declare that they have no competing interests.
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