1. Division of Gastroenterology and Centre for Autoimmune Liver Diseases Department of Medicine and Surgery University of Milan Bicocca Milan Italy
2. National Institute of Health Research Liver Biomedical Research Centre Birmingham Centre for Liver Research Institute of Immunology and Immunotherapy University of Birmingham Birmingham United Kingdom
3. Liver Transplant and Hepatobiliary Unit Queen Elizabeth Hospital University Hospital of Birmingham NHS Foundation Trust Birmingham United Kingdom
4. European Reference Network on Hepatological Diseases (ERN RARE‐LIVER) San Gerardo Hospital Monza Italy