1. Department of Clinical and Molecular Medicine, “La Sapienza” University, Rome, Italy
2. Diabetes Unit, Sant’Andrea Hospital, Rome Italy
3. Metabolic Fitness Association, Monterotondo, Rome, Italy
4. School of Science, University of Greenwich, London, U.K.
5. Laboratory of Clinical Chemistry, Sant’Andrea Hospital, Rome, Italy
6. Department of Clinical Pharmacology and Epidemiology, Consorzio Mario Negri Sud, S. Maria Imbaro, Chieti, Italy