Prenatal DiagnosisFetal DiseasesUltrasonography, PrenatalPregnancyChorionic Villi SamplingPrenatal Exposure Delayed EffectsPrenatal CareAmniocentesisAbortion, EugenicHeterozygote DetectionGenetic CounselingInfant, NewbornAbortion, TherapeuticAmniotic FluidGestational AgePregnancy Trimester, SecondSensitivity and SpecificityAbnormalities, MultipleAbortion, InducedFetusPregnancy OutcomeChromosome DisordersGenetic TestingThalassemiaTrisomyCordocentesisPregnancy Trimester, FirstDown SyndromeHydrops FetalisKaryotypingDiagnostic ErrorsFetal DeathRetrospective StudiesSex Chromosome DisordersHemoglobinopathiesPedigreeHeart Defects, CongenitalCongenital AbnormalitiesPolyhydramniosPolymerase Chain ReactionPregnancy Trimester, ThirdPreimplantation DiagnosisUltrasonography, Doppler, ColorSyndromeEctromeliaHernia, UmbilicalDelayed DiagnosisPregnant WomenSex Determination Analysisbeta-ThalassemiaFetal HeartGenetic Diseases, InbornReproducibility of ResultsChorionic VilliSex Chromosome AberrationsEarly DiagnosisTwins, ConjoinedChromosome AberrationsAneuploidyFatal OutcomeChromosomes, Human, Pair 18FetoscopyPrenatal InjuriesPredictive Value of TestsDiagnostic Tests, RoutineProspective StudiesHydrocolposDiagnosisMagnetic Resonance ImagingMusculoskeletal AbnormalitiesDandy-Walker SyndromeGenetic LinkageMosaicismDiagnostic Techniques and ProceduresLevocardiaPulmonary AtresiaGastroschisisDiagnostic ImagingGenetic ServicesChromosomes, Human, Pair 13Maternal AgeAdrenal Hyperplasia, CongenitalFetomaternal TransfusionGenetic MarkersAnus, ImperforateEchocardiography, Four-DimensionalDNABiopsyMuscular DystrophiesDNA Mutational AnalysisMolecular Diagnostic TechniquesHernia, DiaphragmaticRisk FactorsSpinal Muscular Atrophies of ChildhoodAnencephalyPregnancy, High-RiskOligohydramniosPolymorphism, Restriction Fragment LengthUltrasonographyAgenesis of Corpus Callosum