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Abstract
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Keywords:
AdolescentsAge FactorsAudience ResearchBehaviorContraceptionContraceptive UsageDemographic FactorsDiseasesEducationFamily PlanningInfectionsKnowledgeMarket ResearchPopulationPopulation CharacteristicsReproductive Tract InfectionsResearch MethodologyRisk Reduction BehaviorSex BehaviorSex EducationSexually Transmitted Diseases--prevention and controlYouth