OrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureHumanitiesInformation ScienceNamed GroupsHealth CareGeographicals
SulfonesPurinesPiperazinesPhosphodiesterase InhibitorsPhosphodiesterase 5 Inhibitors3',5'-Cyclic-GMP PhosphodiesterasesErectile DysfunctionCyclic Nucleotide Phosphodiesterases, Type 5CanadaContraceptives, OralHomosexuality, MalePenile ErectionContraceptives, PostcoitalMethamphetamineVasodilator AgentsContraceptives, Oral, CombinedCyclic GMPContraceptives, Oral, HormonalGeorgiaContraception, PostcoitalContraception BehaviorContraceptive Agents, FemaleUnsafe SexContraceptionSexual BehaviorDrug PackagingEthinyl EstradiolContraceptive Devices, FemaleMedication AdherenceRisk-TakingDesogestrelContraceptives, Oral, SyntheticDrugs, Chinese HerbalContraceptive DevicesContraceptive AgentsPatient ComplianceTabletsNorpregnenesNorgestrelMenstruationIntrauterine DevicesFamily Planning ServicesHealth Knowledge, Attitudes, PracticeContraceptive Agents, MaleQuestionnairesOntarioMedicine, Chinese TraditionalEthinyl Estradiol-Norgestrel CombinationPharmacists' AidesProgestinsPregnancyNorethindroneCreosoteTransdermal PatchAlbertaNonprescription DrugsCyproterone AcetateBritish ColumbiaPlacebosElectrical Equipment and SuppliesMedroxyprogesterone AcetateTreatment OutcomeCross-Sectional StudiesRisk FactorsQiPregnancy, UnwantedPregnancy, UnplannedPrescription DrugsPlacebo EffectDrug CombinationsUnited StatesManitobaDrug and Narcotic ControlAppetite DepressantsHirsutismTime FactorsCitrus sinensisNova ScotiaHIV InfectionsArctic RegionsLynestrenolEmeticsAbortion, InducedDifferential Thermal AnalysisAndrostenesPharmaciesCapsulesPatient Education as TopicNatural Family Planning MethodsHealth SurveysAge FactorsDrug LabelingQuebecDouble-Blind MethodLogistic ModelsMenstrual CycleMenstruation DisturbancesCohort StudiesUterine HemorrhageDeception