Funding for this research was provided by:
Received: 12 February 2020
Accepted: 14 April 2020
First Online: 11 May 2020
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the Institutional Review Boards of the Johns Hopkins Bloomberg School of Public Health (reference number - 00004746), the Center for Injury Prevention Research, Bangladesh and International Center for Diarrheal Disease Research, Bangladesh. Written informed consent was obtained for all participants in this study.
: Not applicable.
: The authors declare that they have no competing interests.