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Abstract
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Keywords:
Abortion, InducedAsiaBirths AvertedContraceptionContraceptive EffectivenessContraceptive UsageDemographic FactorsDeveloping CountriesEastern AsiaFamily PlanningFamily Planning Program EvaluationFamily Planning ProgramsFertilityFertility Control, PostconceptionFertility MeasurementsKoreaKorea, Republic OfMeasurementPopulationPopulation DynamicsPregnancy IntervalsReproductive BehaviorResearch MethodologyUse-effectiveness