1. Department of Tropical and Infectious Diseases Policlinico Umberto I Rome Italy
2. Department of Gastroenterology Ospedale Molinette Turin Italy
3. Department of Gastroenterology Ospedale Niguarda Milan Italy
4. Gastroenterology Unit Fondazione Casa Sollievo della Sofferenza IRCCS San Giovanni Rotondo Italy
5. Hepatology Unit Ospedale Garibaldi Catania Italy
6. Internal Medicine Unit Policlinico S. Pietro Bergamo Italy
7. Gastroenterology and Hepatology Unit Department of Clinical Medicine and Surgery University of Naples Federico II Naples Italy
8. Infectious Diseases Unit Caserta Hospital Caserta Italy
9. Clinic of Infectious Diseases University of Naples Naples Italy
10. Clinic of Infectious Diseases University of Sassari Sassari Italy
11. National Center for Global Health National Health Institute Rome Italy