Maternal AgeOocytesPregnancyPaternal AgeDown SyndromeBirth OrderPregnancy, High-RiskOogenesisOocyte DonationMeiosisPregnancy OutcomeInfant, NewbornAmniocentesisParityOocyte RetrievalXenopus laevisGestational AgeBirth WeightPrenatal DiagnosisTrisomyAneuploidyPregnancy Trimester, FirstIn Vitro Oocyte Maturation TechniquesNondisjunction, GeneticPregnancy ComplicationsSperm Injections, IntracytoplasmicCongenital AbnormalitiesXenopusEmbryo TransferAbortion, SpontaneousFertilizationMetaphaseBirth CertificatesChromosome DisordersPolar BodiesCrown-Rump LengthNuchal Translucency MeasurementBlastocystReproductive Techniques, AssistedRisk FactorsMicroinjectionsCesarean SectionPregnancy, MultipleCryopreservationPregnancy Trimester, SecondInfant, Low Birth WeightUltrasonography, PrenatalEmbryonic DevelopmentChorionic Gonadotropin, beta Subunit, HumanFetal DeathCumulus CellsOvaryInfant MortalityParthenogenesisPreimplantation DiagnosisLive BirthMothersOvumPremature BirthPregnancy-Associated Plasma Protein-AHernia, UmbilicalSperm-Ovum InteractionsEmbryo Culture TechniquesGastroschisisPrenatal CareChromosome AberrationsInfertility, FemaleFertilization in VitroStillbirthPregnancy RatePerinatal MortalityBirth IntervalsInfant, Small for Gestational AgeBirth RateFetal DiseasesZona PellucidaMaturation-Promoting FactorOvulation InductionCohort StudiesAbortion, EugenicChromosomes, Human, Pair 21Pregnancy in AdolescenceDelivery, ObstetricKaryotypingInfertilityTwinsSpermatozoaZygoteFertilityCleavage Stage, OvumChorionic Villi SamplingLogistic ModelsChromosomes, Human, Pair 18Obstetric Labor ComplicationsRetrospective StudiesChromosomes, Human, 21-22 and YChorionic GonadotropinEmbryo, MammalianEmbryonic and Fetal DevelopmentMarital Status