1. Institute of Cardiology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Policlinico S.Orsola-Malpighi, Via Massarenti n. 9, 40138, Bologna, Italy
2. Department of Cardiovascular Surgery, S. Orsola Hospital, Alma Mater Studiorum-University of Bologna
3. Cardiology Division, Department of Diagnostics, Clinical and Public Health Medicine, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy