Heart MurmursHeart Defects, CongenitalHeart AuscultationHeartHeart SoundsSystolic MurmursPhonocardiographyHeart RateHeart Septal Defects, VentricularFetal HeartStethoscopesAbnormalities, MultipleHeart Septal DefectsInfant, NewbornHeart DiseasesHeart FailureEchocardiographyAuscultationHeart Septal Defects, AtrialGrowth Differentiation Factor 1Heart ValvesDown SyndromeEndocardial Cushion DefectsCardiovascular AbnormalitiesHeart TransplantationUltrasonography, PrenatalPregnancyChromosomes, Human, Pair 22Choanal AtresiaPulmonary Valve StenosisElectronics, MedicalNoonan SyndromeHeart AtriaDuctus Arteriosus, PatentSyndromeHypoplastic Left Heart SyndromeCardiac Surgical ProceduresFetal DiseasesMyocardiumMitral Valve ProlapseDiGeorge SyndromeMutationColobomaPhenotypeTetralogy of FallotCyanosisAortic Valve InsufficiencyRheumatic Heart DiseaseMitral Valve InsufficiencyEchocardiography, Doppler, ColorGestational AgeHeart Arrest, InducedFaciesEchocardiography, DopplerNuchal Translucency MeasurementTime FactorsRetrospective StudiesChromosome DeletionHeart Valve DiseasesFistulaCardiac CatheterizationTrisomyHeart NeoplasmsSitus InversusProspective StudiesHeart BlockMyocytes, CardiacPulmonary ArteryGene Expression Regulation, DevelopmentalFollow-Up StudiesCraniofacial AbnormalitiesCoronary Vessel AnomaliesRisk FactorsSystoleNeonatal ScreeningTransposition of Great VesselsKaryotyping