Prenatal DiagnosisFetal DiseasesUltrasonography, PrenatalUltrasonographyPregnancyChorionic Villi SamplingPrenatal Exposure Delayed EffectsAmniocentesisPrenatal CareAbortion, EugenicUltrasonography, Doppler, ColorHeterozygote DetectionInfant, NewbornGenetic CounselingAbortion, TherapeuticAmniotic FluidGestational AgeUltrasonography, DopplerPregnancy Trimester, SecondAbnormalities, MultipleSensitivity and SpecificityAbortion, InducedFetusPregnancy OutcomeChromosome DisordersPregnancy Trimester, FirstCordocentesisThalassemiaTrisomyUltrasonography, Doppler, PulsedGenetic TestingDown SyndromeFetal DeathRetrospective StudiesKaryotypingHydrops FetalisPregnancy Trimester, ThirdCongenital AbnormalitiesPolyhydramniosHeart Defects, CongenitalEndosonographySex Chromosome DisordersHemoglobinopathiesPedigreeFetal HeartProspective StudiesHernia, UmbilicalUltrasonography, Doppler, DuplexPreimplantation DiagnosisSex Determination AnalysisSyndromeEctromeliaTwins, ConjoinedReproducibility of ResultsPregnant Womenbeta-ThalassemiaUltrasonography, MammaryChorionic VilliFatal OutcomePolymerase Chain ReactionGenetic Diseases, InbornMagnetic Resonance ImagingSex Chromosome AberrationsHydrocolposImaging, Three-DimensionalChromosome AberrationsTomography, X-Ray ComputedPredictive Value of TestsFetoscopyAneuploidyDelayed DiagnosisUltrasonography, InterventionalEarly DiagnosisPrenatal InjuriesHydronephrosisChromosomes, Human, Pair 18Musculoskeletal AbnormalitiesAnus, ImperforateEchocardiography, Four-DimensionalOligohydramniosDandy-Walker SyndromeUltrasonography, Doppler, TranscranialGenetic LinkageRisk FactorsLevocardiaMaternal AgeGastroschisisMosaicismHernia, DiaphragmaticPulmonary AtresiaAnencephalyFollow-Up StudiesPregnancy, High-RiskChromosomes, Human, Pair 13Fetomaternal TransfusionAdrenal Hyperplasia, CongenitalDiagnostic ErrorsGenetic ServicesEchoencephalographyCysts