1 Department of Medicine II, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
2 Centre for Liver Research, Department of Gastroenterology and Hepatology, Odense University Hospital, and Institute for Clinical Research, University of Southern Denmark Odense, Odense, Denmark.
3 Division of Hepatology, Department of Medicine II, Leipzig University Medical Center, Leipzig, Germany. Electronic address: Thomas.Berg@medizin.uni-leipzig.de.