1. Hadiya Zone Health Department, Hadiya Zone, Ethiopia
2. Public Health Department, College of Health Sciences, Wolayta Sodo University, Wolayta Sodo, Ethiopia
3. Public Health Department, College of Health Sciences, Mizan-Tepi University, Mizan-Aman, Ethiopia
4. College of Medicine and Health Sciences, Institute of Public Health, University of Gondar, Gondar, Ethiopia