PregnancyBuffersPregnancy OutcomePregnancy ComplicationsPregnancy, 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, NewbornPlacentaPre-EclampsiaPregnancy, ProlongedPregnancy, TwinFetal DeathUterusAbortion, InducedPregnancy, AbdominalPregnancy Complications, ParasiticPregnancy MaintenanceEmbryo ImplantationUltrasonography, PrenatalPrenatal CareEmbryo TransferFertilization in VitroMaternal-Fetal ExchangeParityPrenatal Exposure Delayed EffectsBirth WeightTime FactorsPregnancy Reduction, MultifetalProgesteroneMaternal AgeHypertension, Pregnancy-InducedCesarean SectionFetal Growth RetardationPremature BirthFetusInfertility, FemaleLactationAbnormalities, Drug-InducedDeciduaProspective StudiesLabor, ObstetricFetal DevelopmentCongenital AbnormalitiesObstetric Labor, PrematureChorionic GonadotropinTwinsRisk FactorsRetrospective StudiesPrenatal DiagnosisHydrogen-Ion ConcentrationMaternal ExposureTrophoblastsDiabetes, GestationalAbortion, TherapeuticTromethamineAbortion, HabitualDelivery, ObstetricEndometriumFetal DiseasesAbortifacient Agents, NonsteroidalInsemination, ArtificialPuerperal DisordersFertilityPlacenta DiseasesSperm Injections, IntracytoplasmicInfant, Low Birth WeightPreconception CareCohort StudiesAmniotic FluidInfertilityPregnant WomenStillbirthGravidityReproductive Techniques, AssistedChorionic Gonadotropin, beta Subunit, HumanParturitionMyometriumKineticsMaternal Nutritional Physiological PhenomenaRNA, Messenger