1 Department of Paediatric Cardiology, Centre de reference des Malformations Cardiaques Congénitales Complexes, M3C, Necker Hospital (M.L.,Y.B., A.L., D.B.); Adult Congenital Heart Disease Unit, Cardiology Department (M.L., A.L., S.C., L.I.) and Department of Pharmacology and INSERM U970 (P.B., H.K.), Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris; and Department of Cardiovascular Radiology, Georges Pompidou European Hospital and INSERM U678 (A.R., E.M.); all at the Paris-Descartes University, Paris, France.