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Summary
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Keywords:
AmericasBarrier MethodsClinical ResearchClinical TrialsContraceptionContraceptive EffectivenessContraceptive MethodsDeveloped CountriesDiseasesFamily PlanningInfectionsNorth AmericaNorthern AmericaReproductive Tract InfectionsResearch MethodologySexually Transmitted Diseases--prevention and controlUnited StatesVaginal Barrier MethodsVaginal Shield