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PregnancyPregnancy TrimestersPregnancy Trimester, ThirdPregnancy Trimester, FirstPregnancy Trimester, SecondPregnancy ComplicationsPregnancy OutcomeTh2 CellsTh1 CellsPregnancy, AnimalGestational AgePregnancy Complications, CardiovascularPregnancy, EctopicPregnancy Complications, NeoplasticUltrasonography, PrenatalAbortion, SpontaneousTh17 CellsInfant, NewbornPregnancy Complications, InfectiousPregnancy RatePlacentaPre-EclampsiaPregnancy in DiabeticsPregnancy, MultiplePregnancy TestsFetal DeathPrenatal DiagnosisFetusFetal DiseasesPregnancy, TubalAmniotic FluidPregnancy in AdolescenceFetal Growth RetardationPregnancy, High-RiskPregnancy ProteinsAbortion, InducedAbnormalities, Drug-InducedPrenatal CareUterusAbortion, LegalBirth WeightTrophoblastsPregnancy Complications, HematologicAbortion, TherapeuticCesarean SectionProspective StudiesPremature BirthPregnancy, UnplannedParityAmniocentesisMaternal-Fetal ExchangeEmbryonic and Fetal DevelopmentPregnancy, UnwantedChorionic VilliDeciduaFetal DevelopmentPregnancy, TwinPrenatal Exposure Delayed EffectsTime FactorsPregnancy Complications, ParasiticDiabetes, GestationalMaternal AgeAbortifacient Agents, NonsteroidalHypertension, Pregnancy-InducedMaternal ExposureAmniotic Band SyndromeCrown-Rump LengthPregnancy, ProlongedPregnancy MaintenancePregnancy, AbdominalRisk FactorsChorionic Gonadotropin, beta Subunit, HumanEmbryo ImplantationFertilization in VitroObstetric NursingCohort StudiesAbortion, HabitualObstetric Labor, PrematureInfant, PrematureCongenital AbnormalitiesEmbryo TransferDown SyndromeRandom AllocationPlacentationRetrospective StudiesFetal BloodMisoprostolReference ValuesChorionic GonadotropinUltrasonography, Doppler, PulsedLabor, ObstetricBody WeightInfant, Low Birth WeightTwinsPlacental CirculationAbortifacient AgentsPlacenta DiseasesUterine HemorrhagePregnancy Reduction, Multifetalalpha-Fetoproteins