1. Medical Research Council Human Nutrition Research (K.S.J., S.A., D.H., A.P., I.S.), Cambridge CB1 9NL, United Kingdom
2. Medical Research Council Keneba (K.S.J., A.P.), The Gambia, B-3000 Leuven, Belgium
3. Clinic and Laboratory of Experimental Medicine and Endocrinology (R.B.), B-3000 Leuven, Belgium
4. Laboratory for Translational Genetics (D.L.), Katholieke Universiteit, B-3000 Leuven, Belgium
5. Vesalius Research Center (D.L.), VIB, Katholieke Universiteit, B-3000, Leuven, Belgium