1. Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Complutense University, 28040 Madrid, Spain
2. Health Research Institute of the San Carlos Hospital (IdISSC), 28040 Madrid, Spain
3. CIBERDEM (Network Biomedical Research Center for Diabetes and Associated Metabolic Diseases), Carlos III Institute of Health, 28029 Madrid, Spain
4. Endocrinology & Nutrition Service, San Carlos Hospital, 28040 Madrid, Spain
5. Department of Medicine, Faculty of Medicine, Complutense University, 28040 Madrid, Spain
6. Digestive Surgery Service, San Carlos Hospital, 28040 Madrid, Spain