1. Department of Hepatology and Gastroenterology Aarhus University Hospital Aarhus Denmark
2. Division of Gastroenterology Center for Autoimmune Liver Diseases Department of Medicine and Surgery University of Milan Bicocca Milan Italy
3. European Reference Network on Hepatological Diseases (ERN RARE‐LIVER) Aarhus University Hospital Aarhus Denmark
4. Center of Biostatistics for Clinical Epidemiology School of Medicine and Surgery University of Milan Bicocca Milan Italy
5. Department of Clinical Epidemiology Aarhus University Hospital Aarhus Denmark
6. European Reference Network on Hepatological Diseases (ERN RARE‐LIVER) San Gerardo Hospital Monza Italy
7. Department of Medical and Surgical Sciences University of Bologna Bologna Italy
8. European Reference Network on Hepatological Diseases (ERN RARE‐LIVER) Policlinico San Orsola – Universitaria di Bologna Bologna Italy
9. Division of Gastroenterology University of Florence Florence Italy
10. Epatocentro Lugano Switzerland
11. Division of Gastroenterology University of Rome La Sapienza Rome Italy
12. European Reference Network on Hepatological Diseases (ERN RARE‐LIVER) Sapenzia University of Rome Rome Italy
13. Internal Medicine University of Rome La Sapienza Rome Italy
14. Division of Hepatology University of Rome Tor Vergata Rome Italy
15. Division of Gastroenterology University of Genova Genova Italy
16. Division of Gastroenterology University of Catanzaro Catanzaro Italy
17. Division of Hepatology University of Udine Udine Italy
18. Division of Gastroenterology University of Ancona Ancona Italy
19. Casa Sollievo della Sofferenza S. Giovanni Rotondo Italy
20. Division of Gastroenterology University of Padova Padova Italy
21. European Reference Network on Hepatological Diseases (ERN RARE‐LIVER) Azienda Ospedaliera – Universitaria di Padova Padova Italy
22. Department of Clinical Biochemistry Aarhus University Hospital Aarhus Denmark