Sperm Injections, IntracytoplasmicFertilization in VitroFertilizationSpermatozoaMicroinjectionsInfertility, MaleEmbryo TransferSperm HeadOligospermiaOocytesSperm CountPregnancySperm-Ovum InteractionsPregnancy RateReproductive TechniquesCryopreservationSperm RetrievalSperm MotilityPregnancy OutcomeMicromanipulationInjectionsSemen PreservationCleavage Stage, OvumSperm CapacitationEmbryo ImplantationZona PellucidaZygoteEjaculationInsemination, ArtificialCytoplasmTestisAcrosomeSemenInfertilityReproductive Techniques, AssistedOvumBlastocystOvulation InductionSperm MaturationInfertility, FemaleEpididymisAzoospermiaEmbryonic DevelopmentEmbryonic and Fetal DevelopmentOocyte RetrievalEmbryo, MammalianPregnancy, MultipleY ChromosomeSuctionSemen AnalysisFertilitySpermatidsSperm TailKlinefelter SyndromeMenotropinsLive BirthAcrosome ReactionEmbryo Culture TechniquesTripletsSperm TransportAbortion, SpontaneousVasovasostomySex Chromosome AberrationsParthenogenesisFollicle Stimulating HormoneChromosome AberrationsFollicular FluidCongenital AbnormalitiesSea UrchinsInsemination, Artificial, HomologousInseminationAneuploidyMetaphaseSpermatogenesisFallopian TubesMicrosurgeryCryoprotective AgentsMicroscopy, ElectronOvarian Hyperstimulation SyndromeOvarian FollicleOocyte DonationMeiosisChorionic GonadotropinPovidoneBlastomeresTime FactorsCell NucleusTwinsIn Vitro Oocyte Maturation TechniquesKaryotypingPreimplantation DiagnosisFollicle Stimulating Hormone, HumanVasectomySperm MidpieceEgg ProteinsRetrospective StudiesFallopian Tube DiseasesProtaminesDigestive System AbnormalitiesGonadotropin-Releasing Hormone