An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Ballesteros M, Montero N, López-Pousa A, Urrútia G, Solà I, Rada G, Pardo-Hernandez H, Bonfill X.Ballesteros M, et al. Among authors: bonfill x.BMC Med Res Methodol. 2017 Sep 7;17(1):135. doi: 10.1186/s12874-017-0402-9.BMC Med Res Methodol. 2017.PMID: 28882125Free PMC article.
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.
Urrútia G, Burton K, Morral A, Bonfill X, Zanoli G.Urrútia G, et al. Among authors: bonfill x.Spine (Phila Pa 1976). 2005 Mar 15;30(6):E148-53. doi: 10.1097/01.brs.0000155575.85223.14.Spine (Phila Pa 1976). 2005.PMID: 15770167Review.