1. Academic Center for Congenital Heart Disease, Department of Pediatric Cardiology, Amalia Children’s Hospital, Radboud University Medical Center, Nijmegen, The Netherlands (F.E.A.U.t.C.).
2. Division of Pediatric Cardiology, Department of Pediatrics, Sophia Children’s Hospital, Erasmus Medical Center, Rotterdam, The Netherlands (F.E.A.U.t.C.).
3. The Nijmegen Fontan Initiative, Radboud University Medical Center, The Netherlands (F.E.A.U.t.C., E.T.T.L.T.).
4. Department of Gastroenterology and Hepatology, Radboud University Medical Center, Nijmegen, The Netherlands (E.T.T.L.T.).