1. Department of Extension and Innovation Studies, College of Agricultural and Environmental Sciences, Makerere University P.O. Box. 7062 Kampala Uganda
2. University of Agriculture of Ketou BP 13 Ketou Republic of Benin
3. Access Agriculture 04. BP 282 Cotonou Republic of Benin
4. International Institute of Tropical Agriculture, Regional Hub for Eastern Africa P.O. Box 34441 Dar es Salaam Tanzania