1. Management Studies Group, School of Social Sciences, Wageningen University and Research Centre, Hollandsweg 1, Wageningen 6706 KN, the Netherlands
2. Department of Agricultural Economics, Kansas State University, Hall Kansas State University, Manhattan, KS 66506, USA
3. Eli Broad Business School, Michigan State University, Business College Complex, East Lansing, MI 48825, USA
4. Department of Agriculture, Food and Resource Economics, Michigan State University, Agricultural Hall, East Lansing, MI 48825, USA