SulfonesPurinesIndiaPiperazinesCanadaPhosphodiesterase InhibitorsPhosphodiesterase 5 Inhibitors3',5'-Cyclic-GMP PhosphodiesterasesErectile DysfunctionCyclic Nucleotide Phosphodiesterases, Type 5Homosexuality, MalePenile ErectionMethamphetamineVasodilator AgentsCyclic GMPGeorgiaUnsafe SexOntarioRisk-TakingSexual BehaviorBritish ColumbiaAlbertaQuebecManitobaNova ScotiaNorthwest TerritoriesArctic RegionsSaskatchewanNunavutInuitsPrevalenceNewfoundland and LabradorIndians, North AmericanQuestionnairesRisk FactorsAmerican Native Continental Ancestry GroupCross-Sectional StudiesNational Health ProgramsSocieties, MedicalRural PopulationHealth SurveysNew BrunswickYukon TerritoryEmigration and ImmigrationMedical TourismIncidencePrince Edward IslandData CollectionInfant, Newborn