PregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy, TubalPregnancy in DiabeticsPregnancy Trimester, SecondPollen TubeNeural Tube DefectsPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousFallopian TubesAbortion, SpontaneousPregnancy ProteinsPregnancy, UnplannedPregnancy, High-RiskPregnancy, UnwantedGestational AgeNeural TubePregnancy Complications, HematologicInfant, NewbornPregnancy, ProlongedPre-EclampsiaPlacentaPregnancy, TwinFetal DeathEustachian TubeChest TubesAbortion, InducedUterusPregnancy, AbdominalPregnancy Complications, ParasiticPregnancy MaintenanceEmbryo ImplantationUltrasonography, PrenatalPrenatal CareEmbryo TransferFertilization in VitroMaternal-Fetal ExchangeParityPrenatal Exposure Delayed EffectsBirth WeightPregnancy Reduction, MultifetalMaternal AgeHypertension, Pregnancy-InducedCesarean SectionProgesteroneInfertility, FemaleFetal Growth RetardationPremature BirthAbnormalities, Drug-InducedCongenital AbnormalitiesFetusFetal DevelopmentLactationPrenatal DiagnosisDeciduaLabor, ObstetricObstetric Labor, PrematureAbortion, TherapeuticMaternal ExposureChorionic GonadotropinTwinsProspective StudiesDiabetes, GestationalFallopian Tube NeoplasmsTrophoblastsFetal DiseasesPreconception CareInsemination, ArtificialIntubation, GastrointestinalAbortion, HabitualRisk FactorsAbortifacient Agents, NonsteroidalDelivery, ObstetricFertilityEndometriumPuerperal DisordersTime FactorsAmniotic FluidFallopian Tube DiseasesInfant, Low Birth WeightSperm Injections, IntracytoplasmicPlacenta DiseasesInfertilityPregnant WomenRetrospective StudiesStillbirthGravidityCohort StudiesReproductive Techniques, Assisted