Funding for this research was provided by:
Grand Challenges Canada
First Online: 26 April 2019
Compliance with Ethical Standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study. Caregivers also provided permission for their children to participate.
: The authors declare that they have no conflict of interest.