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Lladó A, León L, Valls-Solé J, Mena P, Callejas MA, Peri JM.Lladó A, et al.Clin Neurophysiol. 2005 Jun;116(6):1348-54. doi: 10.1016/j.clinph.2005.02.009. Epub 2005 Mar 29.Clin Neurophysiol. 2005.PMID: 15978496Clinical Trial.