1. Public Health Emergency Management, Ethiopia Public Health Institute , Addis Ababa, Ethiopia
2. Clinical, Assessment, Regulatory, and Evaluation Unit, International Vaccine Institute , Seoul , Republic of Korea
3. School of Public Health, Hawassa University , Hawassa, Ethiopia
4. Clinical Trials Directorate, Armauer Hansen Research Institute , Addis Ababa, Ethiopia
5. College of Medicine and Health Sciences, Hawassa University , Hawassa , Ethiopia
6. Department of Global Health and Disease Control, Yonsei University Graduate School of Public Health , Seoul , Republic of Korea