Institut D'investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEReHD), Barcelona, Spain; Liver Unit, Hospital Clínic De Barcelona, School of Medicine and Health Sciences University of Barcelona, Barcelona, Spain. Institute of Liver and Digestive Health, University College London, London, UK. Division of Gastroenterology and Hepatology, Città della Salute e della Scienza Hospital, University of Turin, Turin, Italy. Liver Unit, Hospital Vall d'Hebron and Vall d'Hebron Research Unit (VHIR), Universitat Autònoma de Barcelona, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEReHD), Barcelona, Spain. Unit of Internal Medicine and Hepatology (UIMH), Department of Medicine-DIMED, University of Padova, Padova, Italy. Hepatology and Liver Intensive Care Unit, Hospital Beaujon, APHP, Clichy, France. Department of Internal Medicine I, University of Bonn, Bonn, Germany; Department of Internal Medicine I, Goethe University Frankfurt, Frankfurt, Germany. Department of Gastroenterology and Hepatology, University of Amsterdam, Academic Medical Center, University of Amsterdam, Netherlands. Department of Medical and Surgical Sciences, Alma Mater Studiorum University of Bologna, Bologna, Italy. Department of Internal Medicine I, University of Bonn, Bonn, Germany; Department of Internal Medicine I, Goethe University Frankfurt, Frankfurt, Germany; European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain; Institute for Bioengineering of Catalonia, Barcelona, Spain. Unidad de Gestión Clínica de Enfermedades Digestivas, Instituto de Investigación Biomédica de Málaga-IBIMA, Hospital Universitario Virgen de la Victoria, Universidad de Málaga, CIBERehd, Málaga, Spain. Institut D'investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEReHD), Barcelona, Spain. Clinical Trials Unit, Clinical Pharmacology Department, Hospital Clínic de Barcelona, Barcelona, Spain. European Clinical Research Infrastructure Network, Paris, France. Biostatistics and Data Management Core Facility, Institut D'Investigacions Biomédiques August Pi i Sunyer, Hospital Clinic Barcelona, Spain. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA. Cirrhosis Care Clinic, Division of Gastroenterology (Liver Unit), University of Alberta, CEGIIR, Edmonton, AB, Canada. Institut D'investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEReHD), Barcelona, Spain; Liver Unit, Hospital Clínic De Barcelona, School of Medicine and Health Sciences University of Barcelona, Barcelona, Spain. Electronic address: pgines@clinic.cat.