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De Lucas A, Criado-Alvarez J, Bermejo E, Arroyo A, Gregorio P.De Lucas A, et al.Gac Sanit. 2001 Nov-Dec;15(6):553-4. doi: 10.1016/s0213-9111(01)71624-x.Gac Sanit. 2001.PMID: 11858793Free article.Spanish.No abstract available.