1 Africa Centres for Disease Control and Prevention, Addis Ababa, Ethiopia.
2 Division of Public Health Institutes and Research, Africa Centres for Disease Control and Prevention, Addis Ababa, Ethiopia.
3 Harvard T.H. Chan School of Public Health, Boston, MA United States.
4 Health, Nutrition and Population Global Practice, The World Bank Director, Global Financing Facility for Women, Children and Adolescents, Julio Frenk Professor of the Practice of Public Health Leadership, Harvard T.H. Chan School of Public Health, Boston, MA United States.
5 Harvard T.H. Chan School of Public Health, and Angelopoulos Professor in Public Health and International Development, at the Harvard Chan School and Harvard Kennedy School, MA United States.