1. Dabat Health and Demographic Surveillance Site, Amhara National Regional State, Gondar, Ethiopia
2. Department of Epidemiology, Gilgel Gibe Health and Demographic Surveillance System, Oromia Region, Ethiopia
3. Arba Minch Health and Demographic Surveillance Site, Southern Nation and Nationalities Regional State, Arba Minch, Ethiopia
4. Kilte Awulalo Health and Demographic Surveillance Site, Tigray National Regional State, Mekelle, Ethiopia
5. Department Reproductive Health; CDC Ethiopia, Kersa Health and Demographic Surveillance Site, Oromia Region, Ethiopia
6. Butajira Health and Demographic Surveillance Site, Southern Nation and Nationalities Regional State, Addis Ababa, Ethiopia
7. Center for Disease Control and Prevention, Addis Ababa, Ethiopia
8. Department of Data Mangment, Ethiopian Public Health Association, Addis Ababa, Ethiopia