1. Department of Pharmacy, Injibara University, Injibara, Ethiopia
2. Department of Pharmacy, Wollo University, Dessie, Ethiopia
3. Department of Pharmaceutics, University of Gondar, Gondar, Ethiopia
4. Department of Pharmacy, Debre Birhan University, Debre Birhan, Ethiopia
5. Department of Public Health, Injibara University, Injibara, Ethiopia