1. Department of Experimental Medicine and Surgery; University of Rome Tor Vergata; Rome Italy
2. Hepatology Unit; University Hospital of Rome Tor Vergata; Rome Italy
3. Infectious Diseases Unit; University of Sassari; Sassari Italy
4. Infection Disease Unit; Policlinico S. Orsola-Malpighi; Bologna Italy
5. Division of Infectious Disease; Hospital Sacco of Milan; Milan Italy
6. Infectious Diseases; University Hospital of Rome Tor Vergata; Rome Italy
7. Unit of Microbiology; Hospital Sacco of Milan; Milan Italy
8. Liver Disease Unit, Department of Liver Transplantation; San Camillo Forlanini Hospital; Rome Italy
9. Gastroenterology; “P. Giaccone” University Hospital; Palermo Italy
10. Infectious Diseases; Sant'Andrea Hospital - Sapienza University of Rome; Rome Italy
11. Gastroenterology; Catholic University of Rome; Rome Italy
12. Department of Biomedical, Metabolic and Neural Sciences; University of Modena and Reggio Emilia; Modena Italy
13. Department of Gastroenterology; Scientific Institute for Digestive Disease “Saverio de Bellis” Hospital; Castellana Grotte; Bari Italy
14. Infectious Disease Clinic; Hospital of Chieti; Chieti Italy
15. Gastroenterology; Department of Clinical Medicine and Surgery; University of Naples “Federico II”; Naples Italy
16. Gastroenterology; Department of Clinical Medicine; Sapienza University of Rome; Rome Italy
17. Infectious Diseases and Viral Hepatitis Unit; Second University; Naples Italy
18. Infectious Diseases Unit; Department of Social Health (DISSAL) of the University of Genoa; IRCCS S. Martino-IST; Genoa Italy
19. Department of Medical and Surgical Sciences; University of Bologna; Bologna Italy
20. Department of Public Health and Infectious Diseases; Sapienza University; Polo Pontino; Latina Italy
21. Hepatology Unit; Pescara General Hospital; Pescara Italy
22. Infectious Disease; Hospital “G. Mazzini”; Teramo Italy
23. Department of Infectious Diseases; Hospital Niguarda Ca'Granda; Milan Italy
24. Infectious and Tropical Diseases Unit; Department of Clinical Medicine; Sapienza University of Rome; Rome Italy
25. Department of Internal Medicine; Gastroenterology Unit; University of Genova; Genoa Italy
26. Department of Public Health and Infectious Diseases; Sapienza University of Rome; Rome Italy
27. Infectious Disease Unit; Avezzano General Hospital; Avezzano Italy
28. School of Clinical Medicine; Faculty of Health Science University of the Witwatersrand; Johannesburg South Africa
29. Infectious Disease Unit; Pescara General Hospital; Pescara Italy