1. Pomona College , United States
2. University of California Los Angeles, National Bureau of Economic Research, and Bureau for Research and Economic Analysis of Development , United States; Centre for Economic Policy Research, United Kingdom
3. Georgetown University, National Bureau of Economic Research, and Bureau for Research and Economic Analysis of Development , United States
4. International Food Policy Research Institute, United States; Consortium for Development Policy Research and Centre for Economic Research in Pakistan, Pakistan
5. Harvard University and National Bureau of Economic Research, United States; Centre for Economic Policy Research, United Kingdom; Centre for Economic Research in Pakistan , Pakistan