1. LICOS-Centre for Institutions and Economic Performance, KU Leuven, Leuven, Belgium
2. Development Economics Group, Wageningen University, Wageningen, The Netherlands
3. Freeman-Spogli Institute for International Studies, Stanford University, Stanford, CA, USA
4. China Center for Agricultural Policy, School of Advanced Agricultural Sciences, Peking University, Beijing, China
5. Centre for Experimental Economics in Education, Shaanxi Normal University, Xi’an, China