1. Center for Innovative Drug Development and Therapeutic Trials for Africa (CDT)-Africa, College of Health Sciences, Addis Ababa University, Addis Ababa, 9086, Ethiopia
2. Centre for Global Health Research, Brighton and Sussex Medical School, University of Sussex, Falmer, Brighton BN1 9PX, UK
3. School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, 1176, Ethiopia