[1] AO Fatebenefratelli & Oftalm, Milan, Italy
[2] Henry Dunant Hosp, Athens, Greece
[3] Virginia Commonwealth Univ, Med Ctr, Richmond, VA 23284 USA
[4] IST GmbH, Mannheim, Germany
[5] Hop Beaujon, Ctr Rech Claude Bernard Hepatites Virales, Clichy, France