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Urrutia G, Serra C, Bonfill X, Bastús R; Grupo Trabajo para el Estudio del Cancer de Vejiga Urinaria en la Comarca del Valles Occidental.Urrutia G, et al. Among authors: bonfill x.Gac Sanit. 2002 Jul-Aug;16(4):291-7. doi: 10.1016/s0213-9111(02)71927-4.Gac Sanit. 2002.PMID: 12106548Free article.Spanish.
Balmaña J, Sanz J, Bonfill X, Casado A, Rué M, Gich I, Díez O, Sabaté JM, Baiget M, Alonso MC.Balmaña J, et al. Among authors: bonfill x.Int J Cancer. 2004 Nov 20;112(4):647-52. doi: 10.1002/ijc.20458.Int J Cancer. 2004.PMID: 15382046
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