1. Department of Clinical, Internal, Anesthesiologic and Cardiovascular Sciences Sapienza University of Rome Rome Italy
2. Liverpool Centre for Cardiovascular Science University of Liverpool and Liverpool Heart & Chest Hospital Liverpool UK
3. Department of Medical and Surgical Sciences University Magna Græcia of Catanzaro Italy
4. Cardiology and Cardiothoracic Surgery Department San Raffaele University Hospital Milan Italy
5. Department of Experimental and Clinical Medicine University of Florence Florence Italy