1. Woldia University, College of Health Sciences, School Public Health, Department of Epidemiology & Biostatics, Woldia, Ethiopia
2. Pawe Health Science College, Department of Pharmacy, Pawe Metekel, Ethiopia
3. Debre Tabor University, College of Medicine and Health Science, Department of Pharmacy, Debre Tabor, Ethiopia
4. Debre Markose University, College of Medicine and Health Science, Department of Public Health, Debra Markose, Ethiopia