Prenatal DiagnosisFetal DiseasesUltrasonography, PrenatalPregnancyChorionic Villi SamplingPrenatal Exposure Delayed EffectsPrenatal CareAmniocentesisAbortion, EugenicHeterozygote DetectionGenetic CounselingAbortion, TherapeuticInfant, NewbornAmniotic FluidGestational AgePregnancy Trimester, SecondAbnormalities, MultipleAbortion, InducedFetusPregnancy OutcomeChromosome DisordersThalassemiaTrisomyCordocentesisGenetic TestingPregnancy Trimester, FirstDown SyndromeHydrops FetalisKaryotypingFetal DeathSex Chromosome DisordersSensitivity and SpecificityHemoglobinopathiesPolyhydramniosCongenital AbnormalitiesHeart Defects, CongenitalPedigreePregnancy Trimester, ThirdPreimplantation DiagnosisEctromeliaUltrasonography, Doppler, ColorHernia, UmbilicalRetrospective StudiesPregnant Womenbeta-ThalassemiaSex Determination AnalysisFetal HeartSyndromeChorionic VilliPolymerase Chain ReactionGenetic Diseases, InbornSex Chromosome AberrationsTwins, ConjoinedAneuploidyChromosome AberrationsDelayed DiagnosisPrenatal InjuriesFetoscopyChromosomes, Human, Pair 18Fatal OutcomeHydrocolposEarly DiagnosisDandy-Walker SyndromeMusculoskeletal AbnormalitiesGenetic LinkageLevocardiaGastroschisisMosaicismPulmonary AtresiaChromosomes, Human, Pair 13Fetomaternal TransfusionAdrenal Hyperplasia, CongenitalMaternal AgeGenetic ServicesAnus, ImperforateEchocardiography, Four-DimensionalGenetic MarkersMuscular DystrophiesDNAHernia, DiaphragmaticSpinal Muscular Atrophies of ChildhoodAnencephalyOligohydramniosPregnancy, High-RiskAgenesis of Corpus CallosumMagnetic Resonance ImagingDNA Mutational AnalysisPolymorphism, Restriction Fragment LengthMaternal ExposureNeural Tube DefectsProspective StudiesCystic Adenomatoid Malformation of Lung, CongenitalSpinal DysraphismFetal BloodHypoplastic Left Heart SyndromePregnancy ComplicationsHydronephrosisHeterozygoteMaternal-Fetal ExchangeDiagnosis