Funding for this research was provided by:
Wellcome Trust (106919/A/15/Z)
Received: 29 November 2018
Accepted: 8 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: Prior written informed consent was obtained from all adolescents. We also obtained passive parental consent (active opting out of the research) for adolescents aged under 18 years prior to the adolescents’ participation in the study. The consent process and other study procedures were approved by the Institutional Review Boards at the Public Health Foundation of India (Ref:TRC-IEC-275/15), Sangath (Ref:VP_2015_017), Indian Council of Medical Research (Ref:HMSC/1/2016-SBR) and London School of Hygiene and Tropical Medicine (Ref:11967). Additional approvals were obtained from the Directorate of Education (Delhi) and Archdiocese Board of Education (Goa).
: Not applicable.
: The authors declare that they have no competing interests.
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