VaricoceleOligospermiaInfertility, MaleAzoospermiaChromosomes, Human, YSperm CountAsthenozoospermiaSperm MotilitySpermatozoaSpermatogenesisSpermatic CordSemenSemen AnalysisTestisSex Chromosome AberrationsSex Chromosome Disorders of Sex DevelopmentMesteroloneSeminal Plasma ProteinsHydrocarbons, BrominatedSequence Tagged SitesKlinefelter SyndromeUrologic Surgical Procedures, MaleFertilityAneuploidyY ChromosomeMicrosurgeryChromosome DeletionScrotumTestosteroneTesticular DiseasesIn Situ Hybridization, FluorescenceSperm Injections, IntracytoplasmicKaryotypingChromosome AberrationsRenal VeinsUrogenital Surgical ProceduresSertoli Cell-Only SyndromeProtaminesCryptorchidismEjaculationVasovasostomyAcrosome ReactionSclerotherapyVeinsPhlebographyPolymerase Chain ReactionPregnancy