[1] Tor Vergata Univ, Dept Biol, Rome, Italy
[2] Univ Roma Tor Vergata, Dept Expt Med, Rome, Italy
[3] Univ Roma Tor Vergata, Dept Biol, Rome, Italy
[4] Univ Padua, Dept Mol Med Infect Dis, Padua, Italy
[5] Univ Hosp Rome Tor Vergata, Infect Dis Unit, Rome, Italy
[6] Univ Roma Tor Vergata, Dept Syst Med Infect Dis, Rome, Italy
[7] Univ Roma Tor Vergata, Dept Expt Med, Rome, Italy
[8] Univ Roma Tor Vergata, Dept Biol, Rome, Italy
[9] Univ Roma Tor Vergata, Dept Syst Med Infect Dis, Rome, Italy
[10] Sant Andrea Hosp, Rome, Italy
[11] Univ Padua, Dept Surg Oncol & Gastroenterol, Hepatobiliary Surg & Liver Transplantat Unit, Padua, Italy
[12] Padova Univ Hosp, Microbiol & Virol Unit, Padua, Italy
[13] Policlin Tor Vergata, Hepatol Unit, Rome, Italy
[14] Queen Mary Univ London, Blizard Inst, Barts & London Sch Med & Dent, London, England
[15] Univ Roma Tor Vergata, Infect Dis Clin, Dept Syst Med, Rome, Italy
[16] Univ Turin, Dept Med Sci, Turin, Italy
[17] Univ L Vanvitelli, Infect Dis Unit, Naples, Italy
[18] Univ Roma Tor Vergata, Rtment Biol, Rome, Italy