UterusPregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy Trimester, SecondPregnancy in DiabeticsPregnancy, TubalEmbryo ImplantationPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousPregnancy ProteinsAbortion, SpontaneousGestational AgePlacentaPregnancy, High-RiskPregnancy, UnplannedPregnancy, UnwantedMyometriumProgesteroneDeciduaEndometriumUterine ContractionPregnancy Complications, HematologicInfant, NewbornFetal DeathPre-EclampsiaPregnancy MaintenancePregnancy, ProlongedPregnancy, TwinCervix UteriEmbryo TransferEstradiolAbortion, InducedPregnancy, AbdominalLabor, ObstetricUterine DiseasesUltrasonography, PrenatalUterine NeoplasmsPregnancy Complications, ParasiticFertilization in VitroMaternal-Fetal ExchangePseudopregnancyPrenatal CareCesarean SectionParityEstrusInfertility, FemalePrenatal Exposure Delayed EffectsFetusTrophoblastsBirth WeightOvariectomyFallopian TubesMaternal AgePregnancy Reduction, MultifetalFetal Growth RetardationHypertension, Pregnancy-InducedEstrous CyclePremature BirthFertilityLactationInsemination, ArtificialOvaryChorionic GonadotropinCongenital AbnormalitiesObstetric Labor, PrematureFetal DevelopmentAbnormalities, Drug-InducedAbortifacient Agents, NonsteroidalParturitionTwinsAbortion, TherapeuticMaternal ExposurePlacentationPlacenta DiseasesPrenatal DiagnosisPuerperal DisordersOxytocinHysterectomyAbortion, HabitualDelivery, ObstetricAmniotic FluidDiabetes, GestationalProspective StudiesVaginaTime FactorsGenitalia, FemaleGravidityUterine HemorrhageInfertility