1 Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria; Vienna Hepatic Hemodynamic Lab., Medical University of Vienna, Vienna, Austria.
2 Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria; Vienna Hepatic Hemodynamic Lab., Medical University of Vienna, Vienna, Austria; Christian-Doppler Laboratory for Portal Hypertension and Fibrosis, Medical University of Vienna, Vienna, Austria. Electronic address: thomas.reiberger@meduniwien.ac.at.