1. Columbia University School of International and Public Affairs (SIPA) and National Bureau of Economic Research (NBER), 420 W 118 Street, Suite 819, New York, NY 10027 (e-mail: )
2. Duke Global Health Institute, Box 90519, Durham, NC 27708 (e-mail: )
3. Global INsights Initiative, The World Bank, 1818 H Street NW, Washington, DC 20433 (e-mail: )
4. University of Brasilia, Department of Economics, Campus Universitário Darcy Ribeiro, Brasília, DF, 70910-900, Brazil (e-mail: )
5. International Rescue Committee, 122 East 42nd Street, Suite 1407, New York, NY 10168 (e-mail: )