[1] Massachusetts Gen Hosp, Ctr Liver, Gastrointestinal Div, Boston, MA 02114 USA
[2] Massachusetts Gen Hosp, Dept Med, Boston, MA 02114 USA
[3] Harvard Univ, Sch Med, Boston, MA USA
[4] Univ Strasbourg, Inst Rech Malad Virales & Hepat, INSERM, U1110, Strasbourg, France
[5] Hop Univ Strasbourg, Inst Hosp Univ, Strasbourg, France