1. Department of Environmental Health, College of Medicine and Health Sciences, University of Gondar Comprehensive Specialized Hospital, Gondar, Ethiopia
2. Department of Women’s and Family Health, School of Midwifery, College of Medicine and Health Sciences, University of Gondar, Gondar 6200, Ethiopia
3. Ethiopian Public Health Institute, Addis Ababa 1000, Ethiopia
4. Department of Environmental and Occupational Health and Safety, Institute of Public Health, College of Medicine and Health Sciences, University of Gondar, Gondar 6200, Ethiopia