1. Department of Public Health, AUSL-IRCCS of Reggio Emilia, 42122 Reggio Emilia, Italy
2. Cardiology Unit, University Hospital of Parma, 43126 Parma, Italy
3. Prevention and Rehabilitation Unit, IRCCS Fondazione Don Gnocchi, 43100 Parma, Italy
4. Department of Cardiothoracic and Vascular Medicine and Surgery, Division of Cardiology A.O. San Camillo-Forlanini, 00152 Rome, Italy