Funding for this research was provided by:
National Cancer Institute (R01-CA091021)
Received: 15 January 2018
Accepted: 27 June 2018
First Online: 2 August 2018
Ethics approval and consent to participate
: Ethical approval for this study was granted by the ethics committees of the lead institution on the project (Simon Fraser University, Canada), the London School of Hygiene and Tropical Medicine and the University of York, UK.
: All interview participants were provided with an information sheet and asked to sign a consent form indicating their agreement to participate and the way in which their data could be used.
: The authors declare that they have no competing interests.
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