1. Centre for Innovative Drug Development and Therapeutic Trials for Africa (CDT Africa) College of Health Sciences, Addis Ababa University Addis Ababa Ethiopia
2. U.S. Centers for Disease Control and Prevention (CDC) Addis Ababa Ethiopia
3. Wollo University, Department of Statistics College of Natural Science Dessie Ethiopia
4. International Center for AIDS Care and Treatment Programs (ICAP) at Columbia University's Mailman School of Public Health Addis Ababa Ethiopia
5. Ministry of Health of Ethiopia Addis Ababa Ethiopia
6. Ethiopian Public Health Institute Addis Ababa Ethiopia
7. U.S. Centers for Disease Control and Prevention (CDC) Hanoi Vietnam