1. Clinical and Experimental Endocrinology (H.W.-K., D.R., H.K., L.O., C.M.), B-3000 Leuven, Belgium;
2. Hans Christian Andersen Children's Hospital (H.W.-K., H.T.C.) Odense University Hospital, DK-5000, Odense, Denmark;
3. Department of Endocrinology and Metabolism (M.B., P.M.), Metabolic Unit, University of Pisa, Pisa, Italy;
4. University Hospital Gasthuisberg, Gene Expression Unit (L.V.L., F.S.), B-3000 Leuven, Belgium;
5. Department of Clinical Genetics (K.B., D.L.E.), Odense University Hospital, DK-5000, Odense, Denmark;
6. Department of Molecular and Cellular Medicine, Department of Microbiology and Immunology (P.P.), B-3000 Leuven, Belgium;
7. Department of General Pathology (M.M.), University of Pisa, Pisa, Italy;
8. Laboratory of Experimental Medicine (D.L.E.), Université Libre de Bruxelles, B-1070 Brussels, Belgium