National Bureau of Economic Research (NBER)Stanford University - School of Medicine, Chinese Academy of Social Sciences (CASS) - Center for Chinese Agricultural Policy (CCAP), Chinese Academy of Sciences - Center for Chinese Agricultural Policy, Renmin University of China - School of Economics, Shaanxi Normal University, Stanford University, Leibniz Institute of Agricultural Development in Transition Economies (IAMO), Emory University, Stanford University and Stanford University - Freeman Spogli Institute of International Studies