1. AdventHealth for Children and AdventHealth Transplant Institute, Orlando, Florida, USA
2. Helios University Hospital Wuppertal, Witten Herdecke University, Wuppertal, Germany
3. University of Pittsburgh School of Medicine, UPMC Children’s Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
4. Department of Pediatric Gastroenterology and Hepatology Hannover Medical School, Hannover, Germany
5. Klinikum Starnberg, Starnberg, Germany
6. Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
7. Karol Marcinkowski University of Medical Sciences, Poznan, Poland
8. Medical University of Lodz, Lodz, Poland
9. Karolinska Institutet CLINTEC and Karolinska University Hospital, Stockholm, Sweden
10. Cincinnati Children’s Hospital, Cincinnati, Ohio, USA
11. Boston Children’s Hospital, Boston, Massachusetts, USA
12. Seattle Children’s Hospital and the University of Washington, Seattle, Washington, USA
13. University of California, San Francisco, San Francisco, California, USA
14. Texas Liver Institute, University of Texas Health, San Antonio, Texas, USA
15. Children’s Healthcare of Atlanta and Emory University, Atlanta, Georgia, USA
16. Merck & Co. Inc., Rahway, New Jersey, USA