1. Department of Gastroenterology and Hepatology University Medical Center Groningen University of Groningen Groningen The Netherlands
2. Institute of Biomedicine (IBIOMED) University of León León Spain
3. Department of Laboratory Medicine University Medical Center Groningen University of Groningen Groningen The Netherlands
4. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd) León Spain