1. Heart Failure Unit, Department of Cardiology, G da Saliceto Hospital, Piacenza
2. Cardiopulmonary Unit, San Paolo Hospital, University of Milan
3. Department of Cardiology, Azienda Ospedaliera S. Orsola-Malpighi, University of Bologna
4. Division of Cardiology, Department of Biomedical and Surgical Sciences, University of Verona
5. Veruno Medical Centre, S. Maugeri Foundation, Veruno
6. CNR, Institute of Neurosciences, Padova, Italy
7. Fondazione G. Monasterio CNR-Regione Toscana
8. Department of Cardiology, Azienda Ospedaliera S. Anna, University of Ferrara
9. Scuola Superiore Sant'Anna, Pisa
10. Department of Internal Medicine, San Bortolo Hospital, Vicenza
11. Division of Cardiac Rehabilitation, Federico II School of Medicine, University of Naples
12. Dipartimento di Scienze Cardiovascolari, Centro Cardiologico Monzino, IRCCS, University of Milan