1. Cardiomyopathy Unit (L.T., C.F., A.A., C.Z., M.B., F.C., I.T., I.O.), Careggi University Hospital, Florence, Italy.
2. Pediatric Cardiology Division, Meyer Children’s Hospital of Florence, Italy (F.G., S.F.).
3. Arrhythmology Division (G.R., L.C., E.G., P.P.), Careggi University Hospital, Florence, Italy.
4. Division of General Cardiology (B.T., N.M.), Careggi University Hospital, Florence, Italy.
5. Division of Cardiology, San Donato Hospital, Arezzo, Italy (M.P.).
6. Vascular Medicine, Internal Medicine Department, Azienda USL Toscana Centro, Florence, Italy (I.T.).
7. Cardiothoracovascular Department (N.M.), Careggi University Hospital, Florence, Italy.