Sperm RetrievalOligospermiaSuctionSperm Injections, IntracytoplasmicTestisSpermatozoaAzoospermiaInfertility, MaleEpididymisFertilization in VitroVasovasostomyMicroinjectionsSperm CountSperm MotilityCryopreservationEmbryo TransferSperm HeadMicrosurgeryPregnancyEjaculationPregnancy RateSemen PreservationReproductive TechniquesPregnancy OutcomeVasectomyTissue and Organ HarvestingSperm MaturationKlinefelter SyndromePneumonia, AspirationFertilizationRespiratory AspirationSperm CapacitationOocytesVas DeferensTesticular DiseasesSpermatogenesisSemenSperm-Ovum InteractionsInjectionsMicromanipulationSpermatidsEmbryo ImplantationReproductive Techniques, AssistedInsemination, ArtificialAcrosomeBiopsyCytoplasmBiopsy, NeedleCleavage Stage, OvumFollicle Stimulating HormoneFertilityZona PellucidaMicrodissectionSperm TransportSemen AnalysisInfertilityAneuploidySpecimen HandlingY ChromosomeBiopsy, Fine-NeedleZygoteChromosome AberrationsBlastocystOocyte RetrievalPregnancy, MultipleOvulation InductionSperm MidpieceSeminiferous TubulesEmbryo, MammalianEmbryonic and Fetal DevelopmentInfertility, FemaleKaryotypingEmbryonic DevelopmentRetrospective StudiesAspirations (Psychology)Sertoli Cell-Only SyndromeSperm BanksChromosomes, Human, YSeminal Plasma ProteinsGynecomastiaSex Chromosome AberrationsCell SeparationTripletsIn Situ Hybridization, FluorescenceAbortion, SpontaneousSperm TailInsemination, Artificial, HomologousCongenital AbnormalitiesInhibinsLive BirthMeconium Aspiration SyndromeMenotropinsEmbryo Culture TechniquesTestosteroneCryptorchidismTreatment OutcomeMicroscopy, ElectronInseminationPovidoneCryoprotective Agents