Prenatal DiagnosisUltrasonography, PrenatalFetal DiseasesPregnancyPrenatal Exposure Delayed EffectsPrenatal CarePolyhydramniosPregnancy Trimester, SecondAmniocentesisGestational AgeGastroschisisAbnormalities, MultipleInfant, NewbornChorionic Villi SamplingCongenital AbnormalitiesOligohydramniosPregnancy OutcomeAmniotic Band SyndromePregnancy Trimester, ThirdAbortion, InducedAbortion, EugenicHernia, UmbilicalEchoencephalographyAutopsyFetusFetal DeathSpinal DysraphismFetal HeartHydronephrosisHeart Defects, CongenitalHeterozygote DetectionRetrospective StudiesSensitivity and SpecificityGenetic CounselingDilatation, PathologicKaryotypingAbortion, TherapeuticUltrasonographySyndromeAmniotic FluidProspective StudiesPregnancy Trimester, FirstChromosome DisordersUltrasonicsMagnetic Resonance ImagingUltrasonography, Doppler, ColorDown SyndromeUltrasonic TherapyTrisomyCordocentesisGenetic TestingThalassemiaHydrops FetalisHigh-Intensity Focused Ultrasound AblationUltrasonography, InterventionalPrenatal InjuriesHemoglobinopathiesPregnant WomenPedigreeMaternal ExposureMicrobubblesSex Chromosome DisordersEctromeliaSex Determination AnalysisImaging, Three-DimensionalPreimplantation DiagnosisReproducibility of ResultsChorionic VilliPregnancy ComplicationsTwins, ConjoinedMaternal AgeChromosome AberrationsSex Chromosome AberrationsAneuploidyGenetic Diseases, Inbornbeta-ThalassemiaUltrasonography, DopplerPolymerase Chain ReactionFetoscopyChromosomes, Human, Pair 18Fatal OutcomeMusculoskeletal AbnormalitiesMaternal-Fetal ExchangeUltrasonography, Doppler, PulsedEchocardiography, Four-DimensionalDandy-Walker SyndromePregnancy, High-RiskEarly DiagnosisDelayed DiagnosisPredictive Value of TestsRisk FactorsMaternal-Fetal RelationsHydrocolposTransducersMosaicismAdrenal Hyperplasia, CongenitalFetal DevelopmentAnus, ImperforateChromosomes, Human, Pair 13Levocardia