1. Department of Cardiothoracic and Vascular Anesthesia and Intensive Care, AO SS Antonio and Biagio and Cesare Arrigo, Alessandria, Milan
2. Cardiac Anesthesia and Intensive Care, AOU Maggiore della Carità, Novara
3. Division of Cardiothoracic Intensive Care, ASST Spedali Civili, Brescia
4. Cardio Center, Humanitas Clinical and Research Center - IRCCS, Milan, Italy
5. Intensive Care Unit, University Hospital Basel, Switzerland