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Abstract
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Keywords:
Abdominal CrampsAcceptor CharacteristicsAcceptorsAdnexitisAge FactorsBehaviorBiologyBlood Coagulation EffectsCardiovascular EffectsContraceptionContraceptive AgentsContraceptive Agents, FemaleContraceptive Agents, ProgestinContraceptive Methods--side effectsDemographic FactorsFamily PlanningFamily Planning ProgramsMammary Gland EffectsOral Contraceptives, Low-doseOral Contraceptives--side effectsOvarian CancerPhysiologyPopulationPopulation CharacteristicsPregnancy, EctopicProgestins, Low-doseSmoking