1. Department of Translational Medical Sciences, Cardiac Rehabilitation Unit, University of Naples “Federico II,” Via S. Pansini 5, 80131 Naples, Italy
2. Department of Critical Care Medicine and Surgery, Cardiac Rehabilitation Unit, University of Florence and Azienda Ospedaliero-Universitaria Careggi, Via delle Oblate 4, 50141 Florence, Italy
3. Division of Cardiac Rehabilitation, Fondazione Europea di Ricerca Biomedica, Via Uboldo 56, 20063 Cernusco S/N, Italy
4. Clinica “Le Terrazze,” Via Foscolo 6/B, 21035 Cunardo, Italy
5. Cardiac Rehabilitation Unit, Department of Cardiology, La Colletta Hospital, Via del Giappone, 16011 Arenzano, Italy
6. Azienda Ospedaliera S. Anna e S. Sebastiano di Caserta, Via Gennaro Tescione 1, 81100 Caserta, Italy