1. Food and Nutrition Sciences Laboratory, International Institute of Tropical Agriculture (IITA), Southern Africa Hub, P.O. Box 310142, Chelston, Lusaka, Zambia
2. Food and Nutrition Sciences Laboratory, International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Road, Ibadan, Oyo State, Nigeria
3. Department of Human Nutrition, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria