1. Laboratory for Human Nutrition (M.B.Z., R.B.), Swiss Federal Institute of Technology, CH-8092 Zürich, Switzerland
2. Medical Research Council (P.L.J., S.S.), Cape Town 7505, South Africa
3. University of Venda (N.S.M., X.M.), Thohoyandou 0950, South Africa
4. The Ministry of Health (N.C.), Rabat, Morocco
5. The Ministry of Health (M.B.), Tirana, Albania
6. University Hospital (L.G.), 372 Tirana, Albania
7. Child Advocacy International (J.B.), Newcastle under Lyme ST5 1ND, United Kingdom