1 Liver ICU, Liver Unit, Hospital Clinic, University of Barcelona, Barcelona, Spain.
2 Liver ICU, Liver Unit, Hospital Clinic, University of Barcelona, Barcelona, Spain; European Foundation of Chronic Liver Failure (EF-Clif), Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHED), ISCIII, Spain. Electronic address: jfdez@clinic.cat.