1. Center for Global Development, Washington, DC, USA
2. Social Protection and Health Division, Inter-American Development Bank, Washington, DC, USA
3. Department of Public Health, Pontificia Universidad Católica de Chile, Santiago, Chile
4. Faculty of Medicine, Center for Cancer Prevention and Control, Santiago, Chile
5. Nuffield Department of Population Health, University of Oxford, Oxford, UK
6. Center for Global Development, London, UK
7. Center for the Evaluation of Value and Risk in Health, Tufts Medical Center, Boston, MA, USA