1. Endocrinology Unit (L.I., M.D., P.C.), Hospital Sant Joan de Déu, University of Barcelona, 08950 Esplugues, Barcelona, Spain
2. CIBER de Diabetes y Enfermedades Metabólicas Asociadas (L.I., M.D., P.C.), ISCIII, 28029 Madrid, Spain
3. Department of Pediatrics (A.L.-B.), Dr. Josep Trueta Hospital, University of Girona, 17007 Girona, Spain
4. Endocrinology Unit (M.V.M.), Hospital de Terrassa, 08227 Terrassa, Spain
5. Department of Woman and Child (F.d.Z.), University of Leuven, 3000 Leuven, Belgium