1. Internal Medicine Department, University Campus Bio-Medico of Rome, Italy
2. Emergency Department, Policlinico Tor Vergata, Roma, Italy
3. Department of Medical Systems, Università di Tor Vergata, Roma, Italy
4. Department of Experimental Medicine & Surgery, Università di Tor Vergata, Roma, Italy
5. Department of Laboratory Medicine, Policlinico Tor Vergata, Roma, Italy
6. Unit of Clinical Laboratory Science, University Campus Bio-Medico of Rome, Italy
7. Department of Internal Medicine ‘SS.ma Annunziata' Hospital, Chieti, Italy
8. Unit of Medical Statistics & Molecular Epidemiology, University Campus Bio-Medico of Rome, Italy