1. International Institute of Tropical Agriculture (IITA), World Vegetable Center, Arusha, Tanzania
2. Natural Resource Management, International Institute of Tropical Agriculture (IITA), Dar es Salaam, Tanzania
3. International Institute of Tropical Agriculture (IITA), c/o Sokoine University of Agriculture, Morogoro, Tanzania
4. World Agroforestry Centre (ICRAF), Dar-es-Salaam, Tanzania
5. Natural Resource Management, International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria
6. ACDI-VOCA NAFAKA Staple Value Chains Project, Iringa, Tanzania