1. Poverty, Health, and Nutrition DivisionInternational Food Policy Research Institute Washington, DC
2. Michigan State University, work conducted while affiliated with Poverty, Health, and Nutrition DivisionInternational Food Policy Research Institute Washington, DC
3. Department of Health Promotion, Education, and Behavior, Arnold School of Public Health, University of South Carolina, work conducted while affiliated with Poverty, Health, and Nutrition DivisionInternational Food Policy Research Institute Washington, DC