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Vargas Lorenzo I, Vázquez Navarrete ML, Terraza Núñez R, Agustí E, Brosa F, Casas C.Vargas Lorenzo I, et al. Among authors: terraza nunez r.Gac Sanit. 2008 May-Jun;22(3):218-26. doi: 10.1157/13123967.Gac Sanit. 2008.PMID: 18579047Free article.Spanish.