1. Social Scientist, International Centre for Tropical Agriculture (CIAT), P.O. Box MP 228, Mt. Pleasant, Harare, Zimbabwe
2. Department of Applied Economics, Lilongwe University of Agriculture and Natural Resources, Bunda College Campus, P.O. Box 219, Lilongwe, Malawi
3. Senior Agricultural Economist, Agriculture Global Practice, World Bank, Accra, Ghana
4. Socio-economist, International Centre for Tropical Agriculture (CIAT), P.O. Box MP 228, Mt. Pleasant, Harare, Zimbabwe
5. Marondera University of Agricultural Sciences and Technology, P.O. Box 35, Marondera, Zimbabwe
6. International Centre for Tropical Agricultural (CIAT), Apartado Aereo 6713, Cali, Columbia