Sperm RetrievalOligospermiaAzoospermiaTesticular DiseasesTestisTissue and Organ HarvestingSpermatozoaSperm Injections, IntracytoplasmicSpermatogenesisInfertility, MaleMicrosurgeryAsthenozoospermiaSperm MotilityCryopreservationPregnancy RateSuctionEjaculationKlinefelter SyndromeBiopsySemen PreservationSpecimen HandlingSperm CountEmbryo TransferSpermatidsFollicle Stimulating HormoneDissectionPregnancyFertilization in VitroEpididymisReproductive Techniques, AssistedInhibinsPregnancy OutcomeBiopsy, NeedleSemenMicroinjectionsCell Separation