[1] Rovigo Gen Hosp, Dept Cardiol, Rovigo, Italy
[2] Univ Ferrara, Sect Internal & Cardiopulm Med, Dept Med Sci, Ferrara, Italy
[3] Rovigo Gen Hosp, Dept Cardiovasc Diag & Endoluminal Intervent, Rovigo, Italy
[4] Rovigo Gen Hosp, Dept Gastroenterol, Rovigo, Italy
[5] Univ Verona, Dept Cardiac Surg, Verona, Italy