1. Internal Medicine Department, Hospital of Marcianise, ASL Caserta, 81037 Caserta, Italy
2. Internal Medicine Department, Hospital of Latina, ASL Latina, 04100 Latina, Italy
3. Department of Experimental Medicine, University La Sapienza Roma, 00185 Rome, Italy
4. Internal Medicine Department, Hospital of Lagonegro, AOR San Carlo, 85042 Lagonegro, Italy
5. Internal Emergency Department, Hospital of Careggi, University of Florence, 50121 Florence, Italy
6. Department of Medical Science, University of Campania, L. Vanvitelli, 81100 Naples, Italy