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Martínez-Menéndez B, Sempere AP, de la Peña P, Simón de las Heras R, Alvarez-Tejerina J, Mateos-Beato F.Martínez-Menéndez B, et al. Among authors: sempere ap.Rev Neurol. 1998 Sep;27(157):414-21.Rev Neurol. 1998.PMID: 9774811Spanish.