1 Cardiothoracovascular Department, University of Trieste, Polo Cardiologico-Ospedale di Cattinara, Via Valdoni 7, Trieste 34129, Italy. Electronic address: gianfranco.sinagra@asugi.sanita.fvg.it.
2 Cardiothoracovascular Department, University of Trieste, Polo Cardiologico-Ospedale di Cattinara, Via Valdoni 7, Trieste 34129, Italy.