1. Assistant Professor, Food and Resource Economics Department, University of Florida 1103 McCarty Hall B, P.O. Box 110240, Gainesville, FL 32611-0240 USA
2. Professor and Chair, Food and Resource Economics Department, University of Florida 1103 McCarty Hall B, P.O. Box 110240, Gainesville, FL 32611-0240 USA
3. Senior Economist, Applied Research and Methods Team, US Government Accountability Office 441 G St., NW, 20548 Washington, DC USA