1 Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany.
2 Department of Gastroenterology and Hepatology and Tytgat Institute for Liver and Intestinal Research, AGEM, Amsterdam University Medical Centers, Amsterdam, The Netherlands.
3 Department of Gastroenterology, Hepatology and Infectious Diseases, University Hospital, Medical Faculty of Heinrich Heine University Düsseldorf, Germany.