Single Embryo TransferEmbryo TransferPregnancy, MultipleBlastocystTwinsPregnancy RateFertilization in VitroSperm Injections, IntracytoplasmicPregnancyLive BirthEmbryo ImplantationCryopreservationReproductive Techniques, AssistedEmbryo, MammalianPregnancy OutcomeCleavage Stage, OvumEmbryo Culture TechniquesInfertilityMultiple Birth OffspringPreimplantation DiagnosisEmbryonic DevelopmentOvulation InductionBirth RateEmbryo, NonmammalianBlastomeresChick EmbryoEmbryonic and Fetal DevelopmentMorulaOocytesInfertility, FemaleRetrospective StudiesZygoteVitrificationCloning, OrganismZygote Intrafallopian TransferCost-Benefit AnalysisOocyte DonationEmbryo LossNuclear Transfer TechniquesCulture TechniquesReproductive TechniquesMaternal AgeInfant, NewbornGene Expression Regulation, DevelopmentalUterusBlastocyst Inner Cell MassZona Pellucida