Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1134345)
Received: 19 May 2017
Accepted: 10 January 2018
First Online: 5 February 2018
Ethics approval and consent to participate
: This study involves the use of non-sensitive, completely anonymous survey and interview procedures. The participants are not defined as ‘vulnerable’ and participation did not induce undue psychological stress or anxiety. Hence ethical approval is not applicable. In the survey, the researchers also added a section for consent to use their responses for the analysis.
: The authors declare that they have no competing interests.
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