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Summary
No abstract available in PubMed .
Keywords:
Age FactorsAmericasBiologyDemographic FactorsDeveloped CountriesEcologyFecundityGenitaliaGenitalia, FemaleLactationLiterature ReviewMaternal PhysiologyNorth AmericaNorthern AmericaOvaryPhysiologyPopulationPopulation CharacteristicsPopulation DynamicsReproductionSeasonal VariationUnited StatesUrogenital System