1. Department of Internal Medicine, Istituti Ospitalieri di Cremona, Italy
2. Department of Internal Medicine, Ospedale S. Paolo di Savona, Italy
3. Cardiology Unit, Maggiore Hospital Bologna, Italy
4. Department of Clinical and Experimental Medicine, Insubria University Varese, Italy
5. Department of Internal Medicine, Ospedale di Arco, Italy
6. Department of Internal Medicine, Ospedale di Vittoria, Italy
7. Department of Internal Medicine, University of Chieti, Italy
8. Centro Studi FADOI, Italy
9. ANMCO Research Center, Italy
10. Department of Internal Medicine, Ospedale Madonna del Buonconsiglio Fatebenefratelli di Napoli, Italy
11. Department of Internal Medicine, Ospedale Maggiore di Novara, Italy
12. Department of Internal Medicine, Ospedale di Legnano, Italy
13. Department of Internal Medicine, Insubria University Varese, Italy