1. Liver Unit, Department of Internal Medicine, Hospital Universitari Vall d'Hebrón, Barcelona, Spain
2. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto Carlos III, Spain
3. Liver Cancer Program, Division of Liver Diseases, Mount Sinai School of Medicine, New York, NY, USA
4. Department of General-, Visceral- and Pediatric Surgery, University Hospital Düsseldorf, Düsseldorf, Germany