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Summary
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Keywords:
Age FactorsBehaviorBiologyCervical EffectsCervixClinical ResearchContraceptionContraceptive Methods--side effectsCytologic EffectsDemographic FactorsFamily PlanningGenitaliaGenitalia, FemaleOral Contraceptives--side effectsPhysiologyPopulationPopulation CharacteristicsResearch MethodologySex BehaviorUrogenital SystemUterus