Central Laboratory, Careggi University Hospital, Florence, Italy. Department of Experimental and Clinical Medicine, University of Florence, Italy. Department of Experimental and Clinical Medicine, University of Florence, Italy; Unit of Atherothrombotic Diseases, Careggi University Hospital, Florence, Italy. Department of Experimental and Clinical Medicine, University of Florence, Italy; Unit of Clinical Nutrition, Careggi University Hospital, Florence, Italy. Department of Experimental and Clinical Medicine, University of Florence, Italy; Unit of Clinical Nutrition, Careggi University Hospital, Florence, Italy; Don Carlo Gnocchi Foundation, Onlus IRCCS, Florence, Italy. Electronic address: francesco.sofi@unifi.it.