1. Department of Internal Medicine and Therapeutics, Clinica Medica II, Vascular and Metabolic Diseases, IRCCS Policlinico San Matteo Foundation Pavia, Italy.
2. Nutrition and Dietetics Service, Fondazione IRCCS Policlinico San Matteo Pavia, Italy.
3. Clinical Epidemiology and Biometric Unit, Fondazione IRCCS Policlinico San Matteo Pavia, Italy.