[1] Hosp Carlos III, Dept Infect Dis, Madrid 28029, Spain
[2] Univ Hosp Brescia, Dept Infect Dis, Brescia, Italy
[3] Johns Hopkins Med Inst, Viral Hepatitis Ctr, Baltimore, MD 21205 USA
[4] Osped L Sacco, Dept Infect Dis, Milan, Italy
[5] Hop La Pitie Salpetriere, Dept Hepatol, Paris, France
[6] Univ Calif San Francisco, Hepatol Unit, San Francisco, CA 94143 USA
[7] Ctr HIV & Hepatogastroenterol, Dusseldorf, Germany
[8] Mt Sinai Sch Med, Div Infect Dis & Liver Dis, New York, NY USA
[9] Univ Athens, Sch Med, GR-11527 Athens, Greece
[10] Necker Cochin Hosp, Liver Unit, Paris, France
[11] Univ Hosp Bonn, Dept Med 1, Bonn, Germany