1 Department of Endocrinology and Nutrition, Hospital Universitario Ramón y Cajal, Madrid, Spain.
2 Diabetes, Obesity, and Human Reproduction Research Group, Instituto Ramón y Cajal de Investigación Sanitaria, Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain.
3 Department of Clinical Biochemistry, Hospital Universitario Ramón y Cajal, Madrid, Spain.
4 University of Alcalá, Madrid, Spain.
5 Department of Endocrinology and Nutrition, Hospital Universitario Ramón y Cajal, Madrid, Spain [email protected].