1 Department for the Treatment and Study of Pediatric Abdominal Diseases and Abdominal TransplantationMediterranean Institute for Transplantation and Advanced Specialized TherapiesPalermoItaly.
2 Hannover Medical School, Division of Pediatric Gastroenterology and HepatologyDepartment of Pediatric Kidney, Liver and Metabolic DiseasesHannoverGermany.
3 European Liver Transplant RegistryAPHP Hôpital Paul Brousse, Université, Paris-SudInserm U 935VillejuifFrance.
4 Department of PediatricsUniversity Medical Center GroningenGroningenThe Netherlands.