1Department of Biomedical and Clinical Sciences, University of Milan, Italy. Electronic address: email@example.com. 2Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland; Instituts d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS) and CIBERehd, University of Barcelona, Spain. 3Yale University , New Haven, USA; VA-CT Healthcare System, West Haven, USA. 4Division of Gastroenterology and Hepatology, Department of Medicine III, Medical University of Vienna, Vienna, Austria; Vienna Hepatic Hemodynamic Lab, Medical University of Vienna, Vienna, Austria. 5Internal Medicine IV, Universitätsklinikum, Friedrich Schiller University, Jena, Germany.