Funding for this research was provided by:
Department for International Development, UK Government (Grant PO 5247)
Received: 5 May 2017
Accepted: 30 April 2018
First Online: 22 May 2018
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the Liverpool School of Tropical Medicine (no.12.20) and the National Ethics Committee for Health Research in Cambodia. Informed consent was obtained from each participant prior to starting the interviews.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.