1 Cardiology Unit, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS-ISMETT, Palermo, Italy.
2 Cardiac Surgery Unit, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS-ISMETT, Palermo, Italy.
3 Department of Diagnostic and Therapeutic Services, IRCCS-ISMETT, Palermo, Italy.
4 U.O. Emodinamica e Cardiologia Interventistica, Asp Agrigento, Agrigento, Italy.