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1Por Arleth Herrera, Lian; Flórez Torres, Inna Elida; Romero Massa, Elizabeth; Montalvo Prieto, Amparo AstridPublished in 2012Repositorio Repositorio Universidad de la Sabana
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2Published in 2009Repositorio Repositorio Universidad de la Sabana
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3Article of journalPublished in 2011Repositorio Universidad Nacional de Colombia
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4Published in 2008Repositorio Repositorio Universidad de la Sabana
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