1. Cardiology Department, Azienda Ospedaliera Ordine Mauriziano Umberto I, Turin
2. Cardiovascular Disease Unit, Cardiothoracic and Vascular Department, IRCCS Ospedale Policlinico San Martino, Genova
3. Cardiothoracovascular Department, Azienda Sanitaria Universitaria Giuliano Isontina (ASUGI)
4. Department of Medical Surgical and Health Science, University of Trieste, Trieste, Italy