Prenatal DiagnosisFetal DiseasesCordocentesisUltrasonography, PrenatalPregnancyGestational AgeFetal BloodFetal Growth RetardationChorionic Villi SamplingPrenatal Exposure Delayed EffectsPrenatal CareAmniocentesisAbortion, EugenicHeterozygote DetectionGenetic CounselingAbortion, TherapeuticInfant, NewbornAmniotic FluidPregnancy Trimester, SecondAbnormalities, MultipleAbortion, InducedFetusPregnancy OutcomeChromosome DisordersThalassemiaTrisomyGenetic 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 DysraphismHypoplastic Left Heart SyndromePregnancy ComplicationsHydronephrosisHeterozygoteMaternal-Fetal Exchange