Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1084307)
Received: 16 April 2018
Accepted: 9 August 2018
First Online: 22 August 2018
Ethics approval and consent to participate
: This study has been approved by Health Ministry Steering Committee of the Indian Council of Medical Research, New Delhi (India), the Institutional Ethics Committee, King George’s Medical University (KGMU), Lucknow (India) and relevant public authorities of state government. Written informed consent will be obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.