1 I. Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany.
2 European Reference Network on Hepatological Diseases (ERN RARE-LIVER).
3 Oxford Liver Unit, Translational Gastroenterology Unit, Oxford University Hospitals NHS Foundation Trust, University of Oxford, Oxford.
4 Cambridge Liver Unit, Addenbrooke's Hospital, Cambridge University Hospitals, Cambridge, UK.
5 Division of Gastroenterology and Hepatology, University of North Carolina, Chapel Hill, NC.
6 Unit of Pediatric Gastroenterology, Digestive Endoscopy, Hepatology and Care of the Child with Liver Transplantation, Department of Women's and Children's Health, University Hospital of Padova, Padova, Italy.
7 Department of Paediatric and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark.
8 Swiss Pediatric Liver Center, Department of Pediatrics, Gynecology and Obstetrics, University of Geneva and University Hospitals Geneva, Geneva, Switzerland.