1. Department of Cardiovascular Diseases; San Giovanni-Addolorata Hospital; Roma Italy
2. Heart Failure Unit, ISMETT; Palermo Italy
3. Cardiovascular Department; Azienda Ospedali Riuniti; Trieste Italy
4. Department of Cardiology; Azienda Ospedali Riuniti; Bergamo Italy
5. Department of Cardiology; Azienda G. Brotzu-S. Michele; Cagliari Italy
6. Department of Cardiovascular Research; Istituto Mario Negri; Milan Italy
7. ANMCO Research Center, Via A. La Marmora 34; 50121 Florence Italy
8. Therabel GiEnne Pharma SpA; Milan Italy
9. Department of Clinical and Experimental Medicine; Federico II University Hospital; Napoli Italy