[1] Univ Roma Tor Vergata, Dept Expt Med & Surg, Rome, Italy
[2] Univ Hosp Rome Tor Vergata, Hepatol Unit, Rome, Italy
[3] Fdn IRCCS Policlin San Matteo, Virol Mol, Pavia, Italy
[4] Univ Sassari, Infect Dis Unit, Sassari, Italy
[5] St Orsola Marcello Malpighi Hosp, Bologna, Italy
[6] Univ Naples 2, Infect Dis, Naples, Italy
[7] Hosp Sacco Milan, Div Infect Dis, Milan, Italy
[8] ASST Fatebenefratelli Sacco, Clin Microbiol Virol & Bioemergencies, Milan, Italy
[9] Univ Hosp Messina, Dept Internal Med, Messina, Italy
[10] Amedeo di Savoia Hosp, Infect Dis, Turin, Italy
[11] San Camillo Forlanini Hosp, Hepatol Unit, Rome, Italy
[12] P Giaccone Univ Hosp, Gastroenterol, Palermo, Italy
[13] Univ Federico II Naples, Dept Clin Med & Surg, Naples, Italy
[14] Univ Roma La Sapienza, Infect Dis, St Andrea Hosp, Rome, Italy
[15] IRCCS San Martino, IST Genova, Div Hepatol, Genoa, Italy
[16] IRCCS AOU San Martino, IST, Infect Dis, Genoa, Italy
[17] IRCCS AOU San Martino, IST, Hyg Unit, Genoa, Italy
[18] Saverio de Bellis Hosp, Dept Gastroenterol, Sci Inst Digest Dis, Bari, Italy
[19] Univ Modena & Reggio Emilia, Dept Biomed Metab & Neural Sci, Modena, Italy
[20] Humanitas Univ, Internal Med, Milan, Italy
[21] Univ Cattolica Sacro Cuore, Liver Transplant Unit, Rome, Italy
[22] Hosp Chieti, Infect Dis Clin, Chieti, Italy
[23] Sapienza Univ Rome, Dept Publ Hlth & Infect Dis, Rome, Italy
[24] Sapienza Univ Rome, Gastroenterol, Rome, Italy
[25] Univ Naples 2, Infect Dis & Viral Hepatitis Unit, Naples, Italy
[26] Univ Turin, Unit Gastroenterol, Turin, Italy
[27] Univ Bologna, Dept Med & Surg Sci, Bologna, Italy
[28] Fdn IRCCS Policlin San Matteo, Div Infect & Trop Dis, Pavia, Italy
[29] Univ Pavia, Inst Infect Dis, Pavia, Italy
[30] Pescara Gen Hosp, Hepatol Unit, Pescara, Italy
[31] Hosp G Mazzini, Infect Dis, Teramo, Italy
[32] Hosp Niguarda Ca Granda, Dept Infect Dis, Milan, Italy
[33] Hosp Cotugno, Naples, Italy
[34] SST Santi Paolo & Carlo, Gen Med Unit, Milan, Italy
[35] Avezzano Gen Hosp, Infect Dis Unit, Avezzano, Italy
[36] Univ Hosp Rome Tor Vergata, Infect Dis, Rome, Italy
[37] Pescara Gen Hosp, Infect Dis Unit, Pescara, Italy