1. College of Medicine and Health Sciences, Department of Environmental Health, Dilla University, Dilla, Ethiopia
2. Austrian Red Cross International Cooperation, Addis Ababa, Ethiopia
3. International Organization for Migration, Addis Ababa, Ethiopia
4. Zimbabwe Environmental Health Association, Harare, Zimbabwe
5. Department of Environmental Health, University of Johannesburg, South Africa
6. College of Medicine and Health Sciences, School of Public Health, Dilla University, Dilla, Ethiopia