Sperm RetrievalOligospermiaTissue and Organ HarvestingTestisSpermatozoaAzoospermiaSperm Injections, IntracytoplasmicEjaculationSuctionInfertility, MaleKlinefelter SyndromeTesticular DiseasesSemen PreservationEpididymisVasovasostomySperm CountSperm MotilityCryopreservationReproductive TechniquesMicrosurgerySpermatogenesisMicrodissectionPosthumous ConceptionPregnancy RateFertilization in VitroSperm MaturationEmbryo TransferBiopsyPregnancySperm HeadMicroinjectionsSperm CapacitationReproductive Techniques, AssistedTuberculosis, Male GenitalAutonomic DysreflexiaPregnancy OutcomeSpecimen HandlingInformation Storage and RetrievalFollicle Stimulating HormoneFertilizationSpermatidsBiopsy, NeedleSemenSeminiferous TubulesSertoli Cell-Only SyndromeGynecomastiaMental RecallFertilityVasectomySeminal Plasma ProteinsInhibinsSperm TransportOocyte RetrievalCryptorchidismSperm-Ovum InteractionsRetrospective StudiesChromosomes, Human, YAcrosomeHypogonadismAneuploidySperm MidpieceMemoryEmbryo ImplantationOocytesCell SeparationPredictive Value of TestsSertoli CellsSperm BanksTestosteroneKaryotypingSemen AnalysisZona Pellucida