PregnancyPregnancy OutcomePregnancy ComplicationsAbortion, InducedAbortion, SpontaneousAbortion, HabitualPregnancy, EctopicGravidityPregnancy Complications, CardiovascularAbortion, TherapeuticPuerperal DisordersPregnancy, AnimalStillbirthPregnancy RateParityPregnancy Complications, NeoplasticDilatation and CurettageFetal DeathPregnancy Trimester, FirstBirth IntervalsPregnancy in AdolescenceAbortion, EugenicCesarean SectionPregnancy, High-RiskObstetric Labor, PrematureInfant, NewbornPre-EclampsiaUterine RupturePreconception CareInfertility, FemalePlacenta DiseasesPrenatal DiagnosisPostpartum PeriodDelivery, ObstetricGestational AgePregnancy Trimester, ThirdObstetric Labor ComplicationsFetal DiseasesMaternal AgePrenatal CareRecurrencePregnancy TrimestersPregnancy TestsRisk FactorsUterusPregnancy, MultipleUltrasonography, PrenatalPregnancy in DiabeticsPregnancy, TubalFertilization in VitroPregnancy Trimester, SecondFertilityPregnancy Complications, InfectiousTime FactorsCohort StudiesRetrospective StudiesPregnancy ProteinsPregnancy, UnplannedProspective StudiesPregnancy, UnwantedPregnancy Complications, HematologicFollow-Up StudiesIncidencePregnancy, ProlongedPregnancy, TwinPlacentaPregnancy, AbdominalPregnancy Complications, ParasiticPregnancy MaintenanceEmbryo ImplantationEmbryo TransferMaternal-Fetal ExchangePrenatal Exposure Delayed EffectsBirth WeightPregnancy Reduction, MultifetalHypertension, Pregnancy-InducedProgesteroneFetal Growth RetardationPremature BirthAbnormalities, Drug-InducedLactationFetusFetal DevelopmentDeciduaLabor, ObstetricCongenital AbnormalitiesTwinsChorionic GonadotropinMaternal ExposureDiabetes, GestationalTrophoblastsInsemination, ArtificialAbortifacient Agents, NonsteroidalEndometriumSperm Injections, IntracytoplasmicInfant, Low Birth WeightAmniotic FluidInfertilityPregnant WomenReproductive Techniques, Assisted