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PregnancyPregnancy OutcomePregnancy ComplicationsHarm ReductionPregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousAbortion, SpontaneousPregnancy ProteinsPregnancy, UnplannedPregnancy, High-RiskPregnancy, UnwantedGestational AgePregnancy Complications, HematologicInfant, NewbornPregnancy, ProlongedPre-EclampsiaPregnancy, TwinPlacentaFetal DeathAbortion, InducedPregnancy, AbdominalUterusPregnancy Complications, ParasiticPregnancy MaintenanceUltrasonography, PrenatalEmbryo ImplantationEmbryo TransferPrenatal CareFertilization in VitroMaternal-Fetal ExchangePrenatal Exposure Delayed EffectsParityBirth WeightPregnancy Reduction, MultifetalMaternal AgeHypertension, Pregnancy-InducedCesarean SectionFetal Growth RetardationProgesteronePremature BirthInfertility, FemaleRisk FactorsAbnormalities, Drug-InducedLactationFetal DevelopmentDeciduaFetusLabor, ObstetricObstetric Labor, PrematureCongenital AbnormalitiesPrenatal DiagnosisProspective StudiesTwinsMaternal ExposureChorionic GonadotropinDiabetes, GestationalAbortion, TherapeuticTrophoblastsAbortion, HabitualAbortifacient Agents, NonsteroidalInsemination, ArtificialDelivery, ObstetricFetal DiseasesPuerperal DisordersEndometriumSperm Injections, IntracytoplasmicCohort StudiesFertilityInfant, Low Birth WeightPreconception CarePlacenta DiseasesAmniotic FluidInfertilityPregnant WomenRetrospective StudiesTime FactorsStillbirthGravidityReproductive Techniques, AssistedChorionic Gonadotropin, beta Subunit, HumanParturitionMaternal Nutritional Physiological PhenomenaOvulation InductionPregnancy Tests, ImmunologicLive BirthMyometriumAbortion, Legal