[1] Hop Beaujon, Serv Hepatol, Clichy, France
[2] Hop Beaujon, INSERM, CRB3, Clichy, France
[3] Azienda Osped Univ Pisana, UO Epatol, Pisa, Italy
[4] Policlin Milano, Direz Sci, Columbia, MO USA
[5] Henry Dunant Hosp, Athens, Greece
[6] Abbot GmbH & Co, Wiesbaden, Germany
[7] Roche Prod Pty Ltd, Dee Why, NSW, Australia
[8] F Hoffmann La Roche & Co Ltd, CH-4002 Basel, Switzerland