Sex DistributionSex FactorsAge DistributionRetrospective StudiesAge FactorsRisk FactorsPrevalenceIncidenceProspective StudiesCase-Control StudiesFollow-Up StudiesSex CharacteristicsInfant, NewbornTreatment OutcomeTime FactorsSex Determination ProcessesSexSex AttractantsUnsafe SexSex DifferentiationSex WorkersSex ChromosomesSex-Determining Region Y ProteinHomosexuality, MaleDisorders of Sex DevelopmentProstitutionGenes, sryMultivariate AnalysisSexual PartnersCohort StudiesTranssexualismLogistic ModelsSOX9 Transcription FactorCross-Sectional StudiesSafe SexSexual BehaviorHIV InfectionsSex Determination AnalysisTestosteroneOrchiectomyRisk-TakingPrognosisSexual Behavior, AnimalOdds RatioRisk AssessmentGonadal Steroid HormonesSexually Transmitted DiseasesRegression AnalysisCondomsPredictive Value of TestsQuestionnairesSex PreselectionTestisTransvestismY ChromosomeBisexualitySex RatioDihydrotestosteroneTesticular HormonesSmokingSeverity of Illness IndexProportional Hazards ModelsSex Hormone-Binding GlobulinUnited StatesSocioeconomic FactorsMesonephrosComorbiditySurvival AnalysisSyphilisSex CounselingAndrogensSertoli CellsGonadsChi-Square DistributionLinear ModelsHypertensionBody Mass IndexSurvival RateEpidemiologic MethodsAnalysis of VarianceCopulationMating Preference, AnimalBrazilEducational StatusRegistriesIndonesiaSex EducationHIV SeropositivityEthnic GroupsHigh Mobility Group ProteinsCause of DeathLongitudinal StudiesItalyAfrican AmericansSeminal VesiclesPregnancyCardiovascular DiseasesSpainAfrican Continental Ancestry GroupDisease Progression