OrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureInformation ScienceNamed GroupsHealth CareGeographicals
Drug UsersSubstance Abuse, IntravenousNeedle SharingNeedle-Exchange ProgramsHIV InfectionsSyringesRisk-TakingContraceptives, OralHeroin DependenceSubstance-Related DisordersStreet DrugsHepatitis CHarm ReductionBaltimoreMethadoneHeroinNew York CityContraceptives, Oral, CombinedHIV SeroprevalenceSexual BehaviorContraceptives, PostcoitalHIV SeropositivitySubstance Abuse Treatment CentersBritish ColumbiaContraceptives, Oral, HormonalDrug OverdoseCrack CocainePrevalenceSan FranciscoNeedlesNarcoticsMedication AdherenceAcquired Immunodeficiency SyndromeDrug and Narcotic ControlPrisonersOpioid-Related DisordersContraceptive Agents, FemaleRisk FactorsLaw EnforcementCocaine-Related DisordersPharmaciesContraception, PostcoitalAmphetamine-Related DisordersCross-Sectional StudiesContraception BehaviorQuestionnairesOpiate Substitution TreatmentPatient ComplianceCohort StudiesRussiaInterviews as TopicContraceptionProstitutionUrban PopulationKentuckyHealth Knowledge, Attitudes, PracticeHIV SeronegativityMethamphetamineContraceptive Devices, FemaleSexual PartnersUnited StatesDesogestrelContraceptives, Oral, SyntheticBlood-Borne PathogensHepatitis C AntibodiesHepacivirusEthinyl EstradiolLogistic ModelsPrisonsDrug PackagingEstoniaInternetTattooingSexually Transmitted DiseasesCondomsMexicoSocioeconomic FactorsHepatitis BAntiretroviral Therapy, Highly ActiveUrban HealthSampling StudiesN-Methyl-3,4-methylenedioxyamphetamineContraceptive AgentsHTLV-II InfectionsSoftwareDrugs, Chinese HerbalHIV-1Anti-HIV AgentsIncidenceHomosexuality, MaleSeroepidemiologic StudiesUnsafe SexRisk Reduction BehaviorArkansasContraceptive DevicesHomosexualityVietnamProspective StudiesChinaHealth Services Accessibility