1. Obesity Unit, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic Universitari, Barcelona, Spain
2. Biological Diagnostics, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic Universitari, Barcelona, Spain
3. Diabetes Unit, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic Universitari, Barcelona, Spain
4. Laboratory of Experimental Diabetes, Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Hospital Clinic Universitari, Barcelona, Spain