1. Rudd Center for Food Policy and Obesity; University of Connecticut; Hartford Connecticut USA
2. Dyson School of Applied Economics and Management; Cornell University; Ithaca New York USA
3. Institute for Health Research and Policy; University of Illinois at Chicago; Chicago Illinois USA
4. Department of Nutrition, Gillings School of Global Public Health, and Center for Health Promotion and Disease Prevention; UNC-Chapel Hill; Chapel Hill North Carolina USA