1. Faculty of Agriculture, Department of Agricultural Economics, Çukurova University, Bacali, Adana, Turkey, P.O. Box 01330
2. Department of Research Project, Action-Research for Sustainable Development NGO, Cotonou, Benin, P.O. Box
3. Faculty of Agriculture, Department of Agricultural Economics, University of Nigeria, Nsukka, Nigeria, P.O. Box 041006
4. Food Security and Safety Focused Area Research Group, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, Mafkeng 2790, South Africa