1. Environmental & Regional Economics and DemographyPenn State University
2. College of Economics and Management, Nanjing Agricultural UniversityNanjingChina
3. Courant Research Centre “Poverty, Equity and Growth”University of GöttingenGermany
4. Courant Research Centre “Poverty, Equity and Growth”University of Göttingen
5. Food and Agricultural Policy Research Institute (FAPRI) and the University of MissouriColumbia