Received: 11 October 2018
Accepted: 28 October 2019
First Online: 28 November 2019
Ethics approval and consent to participate
: The study was reviewed and approved by the Ethiopian Institute of Water Resources, Addis Ababa University. It was ethically approved by Ethiopian National Research Ethics Review Committee N<u>o</u> 310/213/2017 with a letter written on July 12 2017. Letters were written by Addis Ababa University to the Ethiopian Administration for Refugees and Returnees Affairs (ARRA), UNHCR, Ethiopian Public Health Institute and Gambella Regional Health Bureau to obtain support for this research work. Official permission was obtained from ARRA to carry out the research in the refugee camps. Informed written consent was obtained from caregivers of each participant child prior to the research activities. The purpose and nature of the study were explained to each caregiver in their language using the information sheet that is prepared with nontechnical and understandable terms. They clear any quires, signs and dated in the informed consent form. Interviewees were ensured that their participation was voluntary and the information they provided was kept confidential.
: Not applicable.
: The authors declare that they have no competing interests.