1. Centre of Excellence for Nutrition, Faculty of Health Sciences North‐West University (Potchefstroom Campus) Potchefstroom South Africa
2. Department of Nutrition and Dietetics University of the Free State (UFS) Bloemfontein South Africa
3. Department of Obstetrics and Gynaecology University of the Witwatersrand Johannesburg South Africa
4. Empilweni Services and Research Unit University of the Witwatersrand Johannesburg South Africa
5. Department of Life and Consumer Sciences University of South Africa Johannesburg South Africa
6. Human Nutrition Laboratory Department of Health Sciences and Technology, Institute of Food, Nutrition and Health, ETH Zurich Zurich Switzerland