1. Cardiovascular Department; Institute of Cardiology, University of Bologna, Policlinico S, Orsola-Malpighi; Bologna Italy
2. Department of Cardiac; Thoracic and Vascular Sciences, University of Padua Medical School; Padua Italy
3. Interventional Cardiology Unit, EMO-GVM Centro Cuore Columbus; Milan Italy
4. Interventional Cardiology Unit, San Raffaele Scientific Institute; Milan Italy
5. Department of Cardiac Surgery; University of Bologna; Bologna Italy
6. Department of Cardiac Surgery; San Raffaele University Hospital; Milan Italy