1. GI Endoscopy, Rikshospitalet University Hospital, Hospital, and Faculty of Medicine, University of Oslo,Oslo, Norway
2. Norwegian PSC Research Center and Section for Gastroenterology, Department of Transplantation Medicine, Division of Cancer Medicine, Surgery and Transplantation, Oslo University Hospital, Rikshospitalet, and Institute of Clinical Medicine, University of Oslo, Oslo, Norway
3. Abteilung für Gastroenterologie, Hepatologie und Endokrinologie, Robert-Bosch-Krankenhaus, Stuttgart, Germany
4. Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
5. Service d’Hépatologie, Hôpital Saint-Antoine, Assistance Publique – Hôpitaux de Paris, Centre de référence des maladies inflammatoires du foie et des voies biliaires, Filière Maladies Rares du Foie de l’Adulte et de l’Enfant (FILFOIE), UPMC UNIV Paris 06, France
6. Gedyt Endoscopy Center, Buenos Aires, Argentina
7. Department of Gastroenterology, Helsinki University Central Hospital, Helsinki, Finland
8. Research Unit for Experimental and Molecular Hepatology, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Medical University of Graz, Austria
9. National Institute for Health Research (NIHR), Birmingham Liver Biomedical Research Unit (BRU), and Centre for Liver Research, University of Birmingham, Birmingham, United Kingdom
10. Pathological Sciences, Sapienza-University, Rome, Italy
11. Clinic of Gastroenterology and Hepatology, Università Politecnica delle Marche – Ospedali Riuniti University Hospital, Ancona, Italy
12. Institute for Liver and Digestive Health, University College London, Royal Free Campus, London, UK
13. Department of Gastroenterology and Interventional Endoscopy, Klinikum Friedrichshain, Berlin, Germany
14. Department of Gastroenterology and Hepatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
15. Department of Gastroenterology and Hepatology, Academic Medical Center, Amsterdam, The Netherlands
16. Department of Medicine I and Martin Zeitz Centre for Rare Diseases, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
17. Center for Digestive Diseases, Karolinska University Hospital and Division of Surgery, CLINTEC, Karolinska Institute, Stockholm, Sweden
18. Digestive Endoscopy Unit, Catholic University, Rome, Italy
19. Digestive Endoscopy Unit, Nuovo Regina Margherita Hospital, Rome, Italy