[1] Royal Free NHS Trust, Liver Unit, London, England
[2] Univ Bordeaux Segalen, Bordeaux, France
[3] CHU St Eloi Hosp, Montpellier, France
[4] Univ Bath, Bath BA2 7AY, Avon, England
[5] RTI Hlth Solut, Barcelona, Spain
[6] CHU Toulouse, Toulouse, France
[7] Erasmus Univ MC, Rotterdam, Netherlands
[8] CHU Rouen, Rouen, France
[9] Univ Verona, I-37100 Verona, Italy
[10] Policlin Univ, Messina, Italy
[11] Catholic Univ Louvain, Louvain, Belgium
[12] Beaujon Hosp, Clichy, France
[13] Clin San Gaudenzio, Novara, Italy
[14] Padua Univ Hosp, Padua, Italy
[15] Hosp Santa Maria, Lisbon, Portugal
[16] Univ Athens, Sch Med, Laiko Gen Hosp, GR-10679 Athens, Greece
[17] St Vincents Univ Hosp, Dublin 4, Ireland