1. From the Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, Gothenburg University, Sweden (K.W.G., Z.M., M.D., G.L., P.E., P.-O.H., A.R.)
2. Adult Congenital Heart Unit, Department of Medicine, Sahlgrenska University Hospital/Östra, Gothenburg, Sweden (Z.M., M.D., P.E.).