1. Department of Public Health, Unity University, Addis Ababa, Ethiopia
2. Department of Public Health Emergency Management, Ethiopian Public Health Institute, Addis Ababa, Ethiopia
3. Department of Public Health, University of South Africa, Pretoria, South Africa
4. Department of Biomedical Science, Kotobe Metropolitan University, Addis Ababa, Ethiopia
5. Department of Public Health, Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia