[1] Magna Graecia Univ Catanzaro, Dept Med & Surg Sci, Catanzaro, Italy
[2] Univ Hosp Padua, Dept Womens & Childrens Hlth, Div Paediat Cardiol, Padua, Italy
[3] Pediat Res Inst IRP Citta Speranza, Padua, Italy
[4] Magna Graecia Univ Catanzaro, Dept Expt & Clin Med, Catanzaro, Italy
[5] Careggi Univ Hosp, Dept Clin & Expt Med, Div Struct Intervent Cardiol, Florence, Italy
[6] Magna Graecia Univ Catanzaro, Dept Med & Surg Sci, Viale Europa 1, I-88100 Catanzaro, Italy