1. Department of Endocrinology, Hospital de la Santa Creu i Sant Pau, UAB, Barcelona, Spain.
2. Department of Internal Medicine, Hospital de la Santa Creu i Sant Pau, UAB, Barcelona, Spain.
3. Department of Biochemistry, Hospital de la Santa Creu i Sant Pau, UAB, Barcelona, Spain.
4. CIBER of Diabetes and Metabolic Diseases (CIBERDEM), Barcelona, Spain.