1. Department of Public Health, College of Medicine and Health Science, Injibara University, Injibara, Ethiopia
2. Department of Midwifery, School of Midwifery, College of Health Science, Woldia University, Woldia, Ethiopia
3. Department of Public Health, School of Public Health, College of Health Science, Woldia University, Woldia, Ethiopia
4. Department of Public Health, College of Health Science, Debre Markos University, Debre Markos, Ethiopia
5. School of Medicine, College of Health Science, Woldia University, Woldia, Ethiopia
6. College of Health Science, Woldia University, Woldia, Ethiopia
7. Amhara National Regional State Public Health Institute, Bahir Dar, Ethiopia
8. Ethiopian Public Health Institute, Addis Ababa, Ethiopia