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Lanas A, Perez-Aisa MA, Feu F, Ponce J, Saperas E, Santolaria S, Rodrigo L, Balanzo J, Bajador E, Almela P, Navarro JM, Carballo F, Castro M, Quintero E; Investigators of the Asociación Española de Gastroenterología (AEG).Lanas A, et al. Among authors: balanzo j.Am J Gastroenterol. 2005 Aug;100(8):1685-93. doi: 10.1111/j.1572-0241.2005.41833.x.Am J Gastroenterol. 2005.PMID: 16086703