[1] Univ Thessaly, Sch Med, Dept Med, Larisa, Greece
[2] Univ Thessaly, Sch Med, Res Lab Internal Med, Larisa, Greece
[3] Medstar Washington Hosp Ctr, Dept Med, Washington, DC USA
[4] Euroimmun AG, Inst Expt Immunol, Lubeck, Germany
[5] Univ Thessaly, Sch Med, Sch Hlth Sci, Dept Med, Larisa, Greece
[6] Kings Coll Hosp London, Sch Med, Kings Coll London, Inst Liver Studies, London, England