Funding for this research was provided by:
European Union Seventh Framework Programme (grant agreement number 306090)
Received: 13 March 2018
Accepted: 12 November 2018
First Online: 29 November 2018
Ethics approval and consent to participate
: Ethical approval was received from Kenya Medical Research Institute (KEMRI) and Liverpool School of Tropical Medicine, with research permit from National Commission for Science Technology and Innovation (NACOSTI). Written informed consent was sought from and signed by all interviewed respondents.
: The manuscript has anonymised information to ensure confidentiality.
: The authors declare that they have no competing interests.
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