HypogonadismInfertility, MaleInfertilityInfertility, FemaleKallmann SyndromeTestosteronePuberty, DelayedKlinefelter SyndromeGonadotropinsGonadotropin-Releasing HormoneHormone Replacement TherapyFertilityReproductive Techniques, AssistedAndropauseGynecomastiaTestisEndocrine System DiseasesSpermatozoaFollicle Stimulating HormonePregnancyAzoospermiaOligospermiaSperm CountEunuchismSpermatogenesisFallopian Tube DiseasesAmenorrheaLuteinizing HormoneReceptors, LHRHErectile DysfunctionDAX-1 Orphan Nuclear ReceptorClomipheneLuteinizing Hormone, beta SubunitFertilization in VitroSex Chromosome AberrationsLibidoLeuprolideCHARGE SyndromeOlfaction DisordersHypopituitarismSperm MotilityEndometriosisSex Hormone-Binding GlobulinGonadal DisordersHysterosalpingographyVaricoceleSemenPubertyGonadotropins, PituitaryOvaryHypothalamic DiseasesSemen AnalysisAndrogensPregnancy RateReproductionOvulation InductionEstradiolReproductive TechniquesGenitalia, FemaleMenotropinsSyndromeKisspeptinsHyperprolactinemiaSex CharacteristicsChorionic GonadotropinEjaculationPedigreeCryptorchidismGonadal Dysgenesis, 46,XXAnovulationPituitary GlandSexual Dysfunction, PhysiologicalSex Chromosome DisordersReceptor, Fibroblast Growth Factor, Type 1AsthenozoospermiaSperm Injections, IntracytoplasmicReproductive MedicineChromosomes, Human, YMutationAdrenal InsufficiencyPrader-Willi SyndromeFertility Agents, FemaleInsemination, ArtificialAbnormalities, MultipleSexual Behavior, AnimalOrgasmHypothalamo-Hypophyseal System