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Clavería A, Ripoll MA, López-Rodriguez A, Rodríguez-Escudero C, Rey García J.Clavería A, et al.Gac Sanit. 2012 Mar;26 Suppl 1:142-50. doi: 10.1016/j.gaceta.2011.10.007. Epub 2012 Jan 21.Gac Sanit. 2012.PMID: 22265647Free article.Spanish.