Pregnancy OutcomePregnancyPregnancy ComplicationsInfant, Low Birth WeightPlacentaInfant, NewbornAbortion, SpontaneousPregnancy, AnimalPregnancy Trimester, FirstFetal DeathPremature BirthPregnancy RatePregnancy, EctopicPregnancy Complications, CardiovascularPregnancy Trimester, ThirdPregnancy Trimester, SecondPregnancy Complications, InfectiousTreatment OutcomeGestational AgePregnancy in DiabeticsPre-EclampsiaStillbirthPregnancy, MultiplePregnancy TrimestersBirth WeightPregnancy Complications, NeoplasticCongenital AbnormalitiesPrenatal CarePregnancy Complications, HematologicObstetric Labor, PrematurePregnancy, High-RiskFetal Growth RetardationPregnancy in AdolescenceFertilization in VitroRetrospective StudiesUltrasonography, PrenatalPregnancy TestsMaternal AgeEmbryo TransferCesarean SectionOutcome Assessment (Health Care)Infant, Small for Gestational AgeProspective StudiesDiabetes, GestationalRisk FactorsEmbryo ImplantationAbortion, InducedHypertension, Pregnancy-InducedPregnancy, TubalAbortion, HabitualParityAbnormalities, Drug-InducedPlacenta DiseasesCohort StudiesPregnancy ProteinsLive BirthInfertility, FemalePreconception CareFetal MacrosomiaPregnancy Complications, ParasiticUterusMaternal ExposurePregnancy, TwinSperm Injections, IntracytoplasmicDelivery, ObstetricTime FactorsInfant MortalityReproductive Techniques, AssistedAbruptio PlacentaeGravidityPregnancy, ProlongedPregnancy, UnplannedApgar ScorePrenatal Exposure Delayed EffectsInfertilityFetal ResorptionAbortion, ThreatenedFetal DevelopmentPregnancy, UnwantedFollow-Up StudiesPerinatal MortalityOvulation InductionChorionic GonadotropinMaternal-Fetal ExchangeUterine ArteryFetal DiseasesOligohydramniosAbortion, TherapeuticLogistic ModelsTwinsPregnancy Reduction, MultifetalOocyte DonationFertilityPrenatal DiagnosisPredictive Value of TestsMaternal WelfareObstetric Labor ComplicationsTrophoblastsRisk AssessmentInsemination, Artificial