1. Agricultural Economist, International Livestock Research Institute, c/o Bioversity International P.O. Box 24384, Kampala, Uganda.
2. Agricultural Economist, World Vegetable Center Eastern and Southern Africa, P.O Box 10, Duluti, Arusha, Tanzania.
3. Animal Health Scientist, International Livestock Research Institute, c/o Bioversity International P.O. Box 24384, Kampala, Uganda.
4. Consultant, Tropical Agriculture Research and Higher Education Centre (CATIE), 30501 Turrialba, Costa Rica.