1. Department of Pharmaceutics School of Pharmacy College of Health and Medical Sciences Haramaya University Harar Ethiopia
2. Department of Clinical Pharmacy School of Pharmacy College of Health and Medical Sciences Haramaya University Harar Ethiopia
3. Department of Emergency and Critical Care Medicine School of Medicine College of Health and Medical Sciences Haramaya University Harar Ethiopia
4. School of Nursing and Midwifery College of Health and Medical Sciences Haramaya University Harar Ethiopia
5. Department of Epidemiology and Biostatistics School of Public Health College of Health and Medical Sciences Haramaya University Harar Ethiopia