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Abstract
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Keywords:
BiologyClinical ResearchContraceptionContraceptive Agents, Estrogen--administraction and dosageContraceptive Agents, Female--administraction and dosageContraceptive Agents--administraction and dosageCytologic EffectsEndocrine SystemEstrogenic Substances, ConjugatedEstrogensFamily PlanningFollicle Stimulating Hormone--analysisGonadotropinsGonadotropins, PituitaryHormonesLuteinizing Hormone--analysisOral ContraceptivesPhysiologyResearch Methodology