OligospermiaAzoospermiaInfertility, MaleSperm CountMesteroloneChromosomes, Human, YSpermatogenesisTestisHydrocarbons, BrominatedSperm MotilitySpermatozoaSperm RetrievalTestosteroneSeminal Plasma ProteinsTesticular DiseasesSperm Injections, IntracytoplasmicSex Chromosome Disorders of Sex DevelopmentSex Chromosome AberrationsKlinefelter SyndromeY ChromosomeVasovasostomyMicrosurgerySemenVasectomyReproductive TechniquesContraceptive Agents, MaleSpermatidsSequence Tagged SitesEpididymisSemen AnalysisSuctionVas DeferensXYY KaryotypeVaricoceleTissue and Organ HarvestingEjaculationCryopreservationFollicle Stimulating HormoneChromosome DeletionGenetic LociEmbryo TransferPregnancy RateEjaculatory DuctsSemen PreservationBiopsyMicroinjectionsFertilization in Vitro