From the *Experimental and Clinical Medicine Department and
†Experimental and Clinical Biomedical Sciences Department, University of Florence; and
‡Heart Surgery Unit, Careggi University Hospital, Florence; and
§Istituto Radiologico Toscano–Alliance Medical, Pistoia, Italy.
The authors declare no conflict of interest.
Correspondence: Gianfranco Vitiello, MD, Largo Brambilla 3, Experimental and Clinical Medicine Department, University of Florence, 50100 Florence, Italy. E-mail: email@example.com.