Funding for this research was provided by:
Wellcome Trust (GR070797MF)
Wellcome Trust Capacity Strengthening Strategic Award Extension phase to the Public Health Foundation of India and a consortium of UK universities (WT084754/Z/08/A)
Received: 4 August 2017
Accepted: 19 January 2018
First Online: 8 February 2018
Ethics approval and consent to participate
: Information sheets in local language were given to the participants and their signatures were obtained in consent forms. Ethics committee approval was obtained from All India Institute of Medical Sciences Ethics Committee, reference number A-60/4/8/2004, and the procedures followed were in accordance with the ethical standards of the committee.
: 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.