1. College of Health Science Oda Bultum University Chiro Ethiopia
2. Department of Public Health, College of Medicine and Health Sciences Injibara University Injibara Ethiopia
3. Department of Biochemistry, College of Medicine and Health Sciences Debre Tabor University Debre Tabor Ethiopia
4. Department of Statistics, College of Natural and Computational Science Oda Bultum University Chiro Ethiopia
5. School of Nursing and Midwifery, College of Health and Medical Sciences Haramaya University Harar Ethiopia
6. Department of Public Health, College of Health Sciences Debre Tabor University Debre Tabor Ethiopia
7. Department of Medical Laboratory Science, Immunology and Molecular Biology Unit, College of Medicine and Health Sciences Bahir Dar University Bahir Dar Ethiopia