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    © 2016 SECOM.Publicado por Elsevier España, S. L. U.Este es un artículo Open Access bajo la licencia CCBY-NC-ND (http://creativecommons.org/licenses/by-nc-nd/4.0/).
    Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/