[1] Gilead Sci Inc, Durham, NC USA
[2] Univ Turin, Dipartimento Gastroenterol, Turin, Italy
[3] Hosp La Fe, Serv Med Digestiva, E-46009 Valencia, Spain
[4] Alfred Hosp, Dept Gastroenterol, Melbourne, Vic, Australia
[5] Hop Hotel Dieu, Serv Hepatogastroenterol, F-69288 Lyon, France
[6] Charite Univ Med Berlin, Med Klin Schwerpunkt Hepatol & Gastroenterol, D-13353 Berlin, Germany
[7] Univ Thessaly, Sch Med, Larisa, Greece
[8] Univ Miami, Sch Med, Miami, FL USA
[9] Hannover Med Sch, D-30623 Hannover, Germany