1 Liver Unit, University of Barcelona, CIBEREHD, Barcelona, Spain and Liver Unit, University of Alberta, CEGIIR, Edmonton, Canada.
2 Biostatistics and Data Management Core Facility, Hospital Clinic Barcelona, Barcelona, Spain.
3 Liver Unit, University of Barcelona, CIBEREHD, Spain and Hepatology, Swiss Liver Center, Universitätsklinik für Viszerale Chirurgie und Medizin (UVCM), Inselspital, Berne University, Berne, Switzerland.