Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1084451)
Ukaid (P06254, n/a (LSHTM - STRIVE), n/a (Voices for Change))
Text and Data Mining valid from 2019-02-12
First Online: 12 February 2019
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: The authors declare that they have no conflict of interest.