[1] Univ Antwerp, Ctr Evaluat Vaccinat, WHO, Collaborating Ctr Prevent & Control Viral Hepatit, B-2610 Wilrijk, Belgium
[2] Tel Aviv Univ, Sackler Sch Med, IL-69978 Tel Aviv, Israel
[3] Tel Aviv Univ, Chaim Sheba Med Ctr, Tel Aviv, Israel
[4] Hadassah Univ Hosp, IL-91120 Jerusalem, Israel
[5] Peekskill Area Hlth Ctr, Peekskill, NY USA