[1] Div Gen Med & Hypertens, Med, Verona, Italy
[2] Div Internal Med Clin & Expt Med, Messina, Italy
[3] Azienda Osped Univ Integrata, Div Liver Unit, Verona, Italy
[4] UCL, Inst Liver & Digest Hlth, Royal Free Hosp, London, England
[5] UCL, London, England
[6] Univ Verona, Verona, Italy
[7] Univ Verona, Azienda Osped Univ Integrata Verona, Verona, Italy