Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1127467)
Received: 28 August 2016
Accepted: 6 July 2017
First Online: 14 July 2017
Change Date: 22 September 2017
Change Type: Erratum
Change Details: An erratum to this article has been published.
Ethics approval and consent to participate
: This study obtained ethical approval from the University of California, San Francisco (153312) and the Institutional Ethics Committee of the Public Health Foundation of India (TRC-IEC-276/15).
: The authors declare that they have no competing interests.
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