AmniocentesisAmniotic FluidChorionic Villi SamplingPrenatal DiagnosisPregnancyPregnancy Trimester, SecondFetal DiseasesDown SyndromeChromosome DisordersPostoperative ComplicationsCordocentesisUltrasonography, PrenatalMaternal Agealpha-FetoproteinsPregnancy, High-RiskRh IsoimmunizationGestational AgeTest Anxiety ScaleEstriolChorioamnionitisGenetic CounselingKaryotypingAbortion, EugenicTrisomyCustodial CareCongenital AbnormalitiesLymphangioma, CysticChromosome AberrationsSex Chromosome AberrationsFetal DeathIatrogenic DiseaseAbortion, SpontaneousAbortion, InducedBiological DressingsFetal Membranes, Premature RupturePregnancy OutcomePregnancy Trimester, FirstPregnancy, TwinObstetric Labor, PrematureRetrospective StudiesPregnant WomenErythroblastosis, FetalPregnancy ComplicationsAneuploidyAmnionInfant, NewbornNeural Tube DefectsProspective StudiesAbortion, TherapeuticIntraoperative ComplicationsTwinsFetal Organ MaturityFoot Deformities, CongenitalPregnancy, MultipleBlood Transfusion, IntrauterineTreatment OutcomeFreedomSex Determination AnalysisKaryotypeRisk FactorsFetusFetofetal TransfusionMosaicismUltrasonography