[1] Univ Hamburg, Hosp Eppendorf, Dept Hepatobiliary Surg & Transplantat, D-20246 Hamburg, Germany
[2] Univ Hamburg, Hosp Eppendorf, Dept Gen Surg, D-20246 Hamburg, Germany
[3] Univ Hamburg, Hosp Eppendorf, Dept Pediat Gastroenterol & Hepatol, D-20246 Hamburg, Germany