作者单位:Hannover Med Sch, Dept Gastroenterol Hepatol & Endocrinol, Hannover, Germany[1]Univ Hlth Network, Toronto Western Hosp, Liver Ctr, Toronto, ON, Canada[2]Klinikum Johann Wolfgang Goethe Univ, Med Klin 1, Frankfurt, Germany[3]Erasmus MC Univ Med Ctr Rotterdam, Dept Gastroenterol & Hepatol, Rotterdam, Netherlands[4]