1. Department of International Health, Johns Hopkins Bloomberg School of Public Health , Baltimore, MD 21205 , United States
2. Spark Street Advisors , New York, NY 10013 , United States
3. Paris Peace Forum , 75015 Paris , France
4. Independent consultant , 78462 Konstanz , Germany
5. Department of Health Policy and Management, Yale School of Public Health , 350 George Street, New Haven, CT 06511 , USA
6. Heilbrunn Department of Population and Family Health, Columbia University , New York, NY 10032 , United States
7. United Nations University International Institute for Global Health , 56000 Kuala Lumpur , Malaysia