1. Paediatric Hepatology, Gastroenterology and Transplantation Hospital Papa Giovanni XXIII Bergamo Italy
2. Department of Pathology ASST Bergamo Est Bergamo Italy
3. Hepatology, Gastroenterology, Digestive Endoscopy, Nutrition, and Liver Transplantation Unit IRCCS Bambino Gesù, Pediatric Hospital Rome Italy
4. Unit of Gastroenterology, Digestive Endoscopy, Hepatology and Care of the Child with Liver Transplantation University Hospital of Padova Padova Italy
5. Paediatric Department and Transplantation ISMETT Palermo Italy
6. IRCCS Burlo Garofolo Trieste Italy
7. Department of Translational Medical Science, School of Medicine and Surgery University of Naples Federico II Naples Italy
8. Fondazione IRCCS Casa Sollievo della Sofferenza Division of Pediatrics San Giovanni Rotondo Italy
9. FROM Research Foundation Hospital Papa Giovanni XXIII Bergamo Italy
10. Department of Medicine‐DIMED University of Padova Padova Italy