OligospermiaInfertility, MaleAzoospermiaSperm CountSpermatozoaSperm MotilityAsthenozoospermiaSemenChromosomes, Human, YSpermatogenesisSperm HeadSemen AnalysisTestisMesteroloneFertilitySex Chromosome AberrationsIntestinal ObstructionAirway ObstructionSeminal Plasma ProteinsHydrocarbons, BrominatedUreteral ObstructionSperm Injections, IntracytoplasmicSex Chromosome Disorders of Sex DevelopmentScrotumSequence Tagged SitesSperm-Ovum InteractionsSperm CapacitationFertilizationTestosteroneAcrosomeKlinefelter SyndromeVaricoceleY ChromosomeEjaculationAcrosome ReactionEpididymisSperm TailAneuploidyChromosome DeletionDuodenal ObstructionPregnancyPregnancy RateUrinary Bladder Neck ObstructionUrethral ObstructionSperm MaturationNasal ObstructionGastric Outlet ObstructionFertilization in VitroVentricular Outflow ObstructionIn Situ Hybridization, FluorescenceChromosome AberrationsKaryotypingSperm TransportSperm MidpieceLacrimal Duct ObstructionSperm BanksSemen PreservationPolymerase Chain ReactionZona PellucidaCholestasisHydronephrosisCholestasis, ExtrahepaticBezoarsSperm WhaleCryopreservationLung Diseases, ObstructiveIleal Diseases