Prenatal DiagnosisFetal DiseasesPregnancyAmniocentesisUltrasonography, PrenatalPrenatal Exposure Delayed EffectsPrenatal CareChorionic Villi SamplingAbortion, EugenicInfant, NewbornHeterozygote DetectionGenetic CounselingAbortion, TherapeuticGestational AgePregnancy Trimester, SecondAmniotic FluidAbnormalities, MultipleFetusSensitivity and SpecificityAbortion, InducedPregnancy OutcomeChromosome DisordersGenetic TestingTrisomyPregnancy Trimester, FirstDown SyndromeThalassemiaCordocentesisFetal DeathHydrops FetalisKaryotypingCongenital AbnormalitiesPregnancy Trimester, ThirdRetrospective StudiesDiagnostic ErrorsPolyhydramniosHeart Defects, CongenitalHemoglobinopathiesPrenatal InjuriesPregnant WomenPedigreeMaternal ExposurePolymerase Chain ReactionSex Chromosome DisordersUltrasonography, Doppler, ColorSyndromeFetal HeartHernia, UmbilicalPreimplantation DiagnosisSex Determination AnalysisEctromeliaTwins, ConjoinedGenetic Diseases, Inbornbeta-ThalassemiaChromosome AberrationsSex Chromosome AberrationsChorionic VilliAneuploidyReproducibility of ResultsPregnancy ComplicationsDelayed DiagnosisMaternal AgeChromosomes, Human, Pair 18Fatal OutcomeProspective StudiesFetoscopyEarly DiagnosisMaternal-Fetal ExchangeMusculoskeletal AbnormalitiesMagnetic Resonance ImagingDandy-Walker SyndromePredictive Value of TestsGastroschisisDiagnostic Tests, RoutineMosaicismGenetic LinkageAdrenal Hyperplasia, CongenitalLevocardiaHydrocolposPregnancy, High-RiskChromosomes, Human, Pair 13DiagnosisRisk FactorsAnus, ImperforateGenetic MarkersFetal Blood