1. Department of Pediatrics I, Center for Pediatric and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
2. European Reference Network on Hepatological Diseases (ERN RARE-LIVER), Hamburg, Germany
3. Department of Pediatrics and Adolescent Medicine, Rigshospitalet Copenhagen University Hospital, Copenhagen, Denmark
4. Liver Unit, Birmingham Women’s and Children’s Hospital, University of Birmingham, Birmingham, United Kingdom
5. Medical-Surgical and Biotechnologies Sciences, Polo Pontino, Sapienza University of Rome, Latina, Italy
6. Hepatology Research Unit, Department of Internal Medicine and Paediatrics, Liver Research Center Ghent, Ghent University, Ghent, Belgium
7. Unidade de Hepatologia e Transplantação Hepática Pediátrica, Hospital Pediátrico de Coimbra, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
8. University Children’s Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
9. Paediatric Gastroenterology/Hepatology, University Hospital Tuebingen, Tuebingen, Germany
10. Department of Surgery, Division of Hepatobiliary Surgery and Liver Transplantation, University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
11. Institute for Digestive Research and Department of Gastroenterology, Lithuanian University of Health Sciences, Kaunas, Lithuania
12. Swiss Pediatric Liver Center, Division of Pediatric Specialties, Department of Pediatrics, Gynecology and Obstetrics, University Hospitals Geneva and University of Geneva, Geneva, Switzerland
13. Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg
14. Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands
15. Dutch Liver Patient Association (NLV), Hoogland, The Netherlands
16. I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
17. Department of Gastroenterology and Hepatology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
18. Gastro Unit, Medical Division, Hvidovre University Hospital, Copenhagen, Denmark
19. Department of Clinical Medicine, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.