EstrogensPregnancyReceptors, EstrogenEstrogen Receptor alphaPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalEstrogen Receptor betaPregnancy, EctopicEstrogens, Conjugated (USP)EstradiolPregnancy Trimester, FirstPregnancy Trimester, ThirdPregnancy RatePregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondPregnancy Complications, NeoplasticUterusPregnancy in AdolescenceEstrogens, CatecholPregnancy Complications, InfectiousOvariectomyAbortion, SpontaneousSelective Estrogen Receptor ModulatorsPregnancy ProteinsPregnancy, UnplannedPregnancy, High-RiskPregnancy, UnwantedGestational AgeEstrogens, Non-SteroidalProgesteroneBreast NeoplasmsPregnancy Complications, HematologicPlacentaInfant, NewbornPre-EclampsiaPregnancy, ProlongedPregnancy, TwinFetal DeathTamoxifenEmbryo ImplantationEstradiol CongenersAbortion, InducedReceptors, ProgesteronePregnancy, AbdominalPregnancy MaintenancePregnancy Complications, ParasiticDiethylstilbestrolAromataseUltrasonography, PrenatalEstroneEmbryo TransferFertilization in VitroPrenatal CarePrenatal Exposure Delayed EffectsMaternal-Fetal ExchangeParityEndometriumBirth WeightProgestinsPregnancy Reduction, MultifetalMaternal AgeHypertension, Pregnancy-InducedFetusCesarean SectionInfertility, FemaleFetal Growth RetardationRisk FactorsRNA, MessengerLactationDeciduaFetal DevelopmentChorionic GonadotropinPremature BirthTime FactorsAbnormalities, Drug-InducedLabor, ObstetricPostmenopauseMaternal ExposureProspective StudiesEthinyl EstradiolObstetric Labor, PrematureCongenital AbnormalitiesTrophoblastsTwinsOvaryPrenatal DiagnosisMyometriumDiabetes, GestationalEstrous CycleFertilityAbortion, TherapeuticPhytoestrogensInsemination, ArtificialImmunohistochemistry