Department of Internal Medicine and Medical Therapy, Section of Geriatrics, University of Pavia, Pavia, Italy. fabio.guerriero01@universitadipavia.it. Azienda di Servizi alla Persona, Istituto di Cura Santa Margherita of Pavia, Pavia, Italy. fabio.guerriero01@universitadipavia.it. Department of Internal Medicine and Medical Therapy, Section of Geriatrics, University of Pavia, Pavia, Italy. Department of Public Health, Experimental and Forensic Medicine, Section of Human Nutrition, Endocrinology and Nutrition Unit, University of Pavia, Pavia, Italy. Azienda di Servizi alla Persona, Istituto di Cura Santa Margherita of Pavia, Pavia, Italy.