AmniocentesisPregnancy Trimester, SecondAmniotic FluidPregnancyChorionic Villi SamplingPrenatal DiagnosisPregnancy Trimester, FirstFetal DiseasesUltrasonography, PrenatalPregnancy Trimester, ThirdDown SyndromePregnancy TrimestersGestational AgeChromosome DisordersMaternal Agealpha-FetoproteinsCordocentesisPregnancy, High-RiskPregnancy OutcomeEstriolAbortion, InducedAbortion, SpontaneousTrisomyPregnancy ComplicationsRh IsoimmunizationFetal DeathCongenital AbnormalitiesTest Anxiety ScaleChorioamnionitisKaryotypingObstetric Labor, PrematureFetal Membranes, Premature RuptureFetusGenetic CounselingChromosome AberrationsAbortion, EugenicInfant, NewbornAbortion, TherapeuticLymphangioma, CysticCustodial CareSex Chromosome AberrationsAneuploidyPregnancy Complications, InfectiousNeural Tube DefectsPregnancy, TwinBiological DressingsPregnant WomenTwinsPregnancy, MultipleChorionic VilliAmnionProspective StudiesFetofetal TransfusionIatrogenic DiseaseErythroblastosis, FetalFetoscopyPre-EclampsiaAbortifacient AgentsFetal Organ MaturityUltrasonographyFoot Deformities, CongenitalSex Determination AnalysisFalse Positive ReactionsFetal DevelopmentPrenatal CareBlood Transfusion, IntrauterinePremature BirthNeckFreedomPlacentaMisoprostolAbortifacient Agents, NonsteroidalAbnormalities, MultipleSensitivity and SpecificityPregnancy Complications, NeoplasticKaryotypeFetal Growth RetardationFetal BloodMosaicismChorionic Gonadotropin