1. Department of Public Health, College of Health Science Debre Tabor University Debre Tabor Ethiopia
2. Department of Reproductive Health and population studies, School of public health, College of Medical & Health Sciences Bahir Dar University Bahir Dar Ethiopia
3. Department of pediatric and child health, Tibebe Ghion specialized hospital, college of medicine and health science Bahir Dar university Bahir Dar Ethiopia
4. Department of Public Health, College of Health Science Wolkite University Wolkite Ethiopia
5. Department of Midwifery, College of Health Science Debre Tabor University Debre Tabor Ethiopia
6. Department of Public Health, College of Health Science Woldia University Woldia Ethiopia