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Abstract
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Keywords:
Age FactorsBiologyCervical MucusCervixContraceptionContraceptive AgentsContraceptive Agents, FemaleContraceptive MethodsDemographic FactorsEvaluationFamily PlanningGenitaliaGenitalia, FemaleOral ContraceptivesOral Contraceptives, CombinedPhysiologyPopulationPopulation CharacteristicsUrogenital SystemUterus