Received: 28 November 2019
Accepted: 24 March 2020
First Online: 4 April 2020
Ethics approval and consent to participate
: The study was approved by ethics committees of Centre for Health Research and Development, Society for Applies Studies (India) and World Health Organization (Geneva).A written informed consent in the local language from caregivers prior to enrollment was obtained.
: Not applicable.
: The authors declare that they have no competing interests.