StereoisomerismIsomerismHeterotaxy SyndromeHeart Defects, CongenitalHeart AtriaSitus InversusHeart Septal DefectsAbnormalities, MultipleMolecular StructureVenae CavaeDextrocardiaOptical RotationLevocardiaHeart Bypass, RightMolecular ConformationLiquid CrystalsCircular DichroismPulmonary VeinsErythrocruorinsPulmonary Veno-Occlusive DiseaseModels, MolecularTartratesBody PatterningMagnetic Resonance SpectroscopyChemistry, OrganicCyclizationGrowth Differentiation Factor 1Fetal HeartCyanosisAbortion, EugenicSnailsNodal ProteinAtrioventricular NodeCatalysisFetal DiseasesStructure-Activity RelationshipVena Cava, InferiorProtein ConformationFontan ProcedureModels, ChemicalAzygos VeinDNA, SuperhelicalAlcoholsTachycardia, SupraventricularSinoatrial NodeSpectrophotometry, UltravioletHeart BlockOrganophosphorus CompoundsUltrasonography, PrenatalHeart ValvesAtrial AppendageEstersHeart Septal Defects, AtrialCrystallography, X-RayProlineOrganometallic CompoundsPrenatal DiagnosisSubstrate SpecificityHydrogen BondingNucleic Acid ConformationInfant, NewbornAmino AcidsAlkaloidsSyndromePeptidesChromatography, High Pressure LiquidPregnancyEchocardiographyMolecular Sequence DataKineticsModels, BiologicalThermodynamicsAsiaGestational AgeAmino Acid SequenceComputer SimulationSpleenBinding SitesProtein BindingStomachRetrospective StudiesTreatment OutcomeFollow-Up StudiesTime Factors