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Abstract
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Keywords:
AmericasBehaviorContraception--changesDecision Making--changesDemographic FactorsDeveloped CountriesDeveloping CountriesFamily Planning--changesFertilityFertility MeasurementsGeneticsNorth AmericaNorthern AmericaPopulationPopulation DynamicsPsychological FactorsReproductive Behavior--changesResearch ReportSocial ChangeTechnologyUnited StatesWanted Births