1 Institute of Cardiology, Department of Medical and Surgical Sciences, University of Bologna, Policlinico S.Orsola-Malpighi, via Massarenti 9, 40138 Bologna, Italy.
2 UOC di Cardiologia, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Dipartimento Cardiotoraco-vascolare, via Massarenti 9, 40138, Bologna, Italy.
3 Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Padua, Italy.