1. School of Health Sciences, Department of Nutrition, University of Venda , Limpopo Province, South Africa
2. Iodine Global Network, Regional Coordinator , Cape Town, Southern Africa
3. Centre of Excellence for Nutrition, North-West University , Potchefstroom, South Africa
4. Division of Human Nutrition, Department of Interdisciplinary Health sciences, Stellenbosch University , Cape Town, South Africa