1. Department of Cardiothoracic-Vascular Anesthesia and Intensive Care, IRCCS Policlinico San Donato, Milan, Italy
2. Department of Cardiology, Fondazione Salvatore Maugeri, IRCCS Istituto Scientifico di Montescano, Montescano, Italy
3. Cardiac Anesthesia Unit, Department of Emergency Medicine, University Hospital of Trieste, Trieste, Italy