1. Department of Internal Medicine, University of Insubria, Varese, Italy
2. Department of Internal and Cardiovascular Medicine-Stroke Unit, Hospital “S. Maria della Misericordia,” University of Perugia, Perugia, Italy
3. Department of Internal Medicine, Hospital “Maggiore della Carità,” Novara, Italy
4. Department of Internal Medicine, Hospital of Luino, ASST-Sette Laghi, University of Insubria, Varese, Italy
5. Department of Internal Medicine, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
6. Department of Clinical Science and Community, Section of Medical Statistics, Biometry and Epidemiology, Faculty of Medicine and Surgery, University of Milan, Milan, Italy
7. Department of Internal Medicine, Hospital “L. Parodi Delfino,” Colleferro, Rome, Italy
8. Department of Research, FADOI Foundation, Milan, Italy
9. Department of Emergency Medicine, AOU Hospital, Ancona, Italy
10. Department of Internal Medicine, Hospital “Villa Sofia,” Palermo, Italy
11. Department of Internal Medicine, Hospital “G. Tatarella”- ASL-FG, Cerignola, FG, Italy
12. Department of Medical, Hospital “Buon Consiglio-Fatebenefratelli,” Naples, Italy