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, PrematurePre-EclampsiaInfant, NewbornUterine RupturePreconception CareInfertility, FemalePlacenta DiseasesPrenatal DiagnosisPostpartum PeriodDelivery, ObstetricGestational AgePregnancy Trimester, ThirdObstetric Labor ComplicationsFetal DiseasesMaternal AgePrenatal CareRecurrencePregnancy TrimestersPregnancy TestsRisk FactorsUterusPregnancy, MultipleUltrasonography, PrenatalPregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondFertilization in VitroFertilityPregnancy Complications, InfectiousCohort StudiesRetrospective StudiesTime FactorsPregnancy ProteinsPregnancy, UnplannedPregnancy, UnwantedProspective StudiesPregnancy Complications, HematologicFollow-Up StudiesIncidencePregnancy, ProlongedPregnancy, TwinPlacentaPregnancy, AbdominalPregnancy Complications, ParasiticPregnancy MaintenanceEmbryo ImplantationEmbryo TransferMaternal-Fetal ExchangePrenatal Exposure Delayed EffectsBirth WeightPregnancy Reduction, MultifetalHypertension, Pregnancy-InducedFetal Growth RetardationProgesteronePremature BirthAbnormalities, Drug-InducedLactationFetal DevelopmentDeciduaFetusLabor, ObstetricCongenital AbnormalitiesTwinsMaternal ExposureChorionic GonadotropinDiabetes, GestationalTrophoblastsAbortifacient Agents, NonsteroidalInsemination, ArtificialEndometriumSperm Injections, IntracytoplasmicInfant, Low Birth WeightAmniotic FluidInfertilityPregnant WomenReproductive Techniques, Assisted