1 Liver Failure Group, Institute for Liver and Digestive Health, University College London, Royal Free Campus, London, United Kingdom; Section Hepatology, Clinic for Gastroenterology and Rheumatology, University Hospital Leipzig, Leipzig, Germany; Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Charité Campus Mitte, Charité - Universitaetsmedizin Berlin, Berlin, Germany.
2 Liver Failure Group, Institute for Liver and Digestive Health, University College London, Royal Free Campus, London, United Kingdom; Institute of Hepatology, Foundation for Liver Research, London, United Kingdom; Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom.
3 Department of Hepatology and Gastroenterology, Campus Virchow-Klinikum and Charité Campus Mitte, Charité - Universitaetsmedizin Berlin, Berlin, Germany. Electronic address: frank.tacke@charite.de.