Received: 14 May 2019
Accepted: 4 November 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: This study was reviewed by the Institutional Review Board of Emory University (Study IRB #079-2006) and the Amhara National Regional State Health Bureau. Consideration was given to the low literacy rate in the study region, and it was determined that a verbal informed consent should be obtained from study participants prior to data collection. Following the guidelines outlined by the Declaration of Helsinki, informed consent for individuals and parents of children participating in the study were recorded.
: Not applicable.
: The authors declare that they have no competing interests.