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Pardo A, García-Losa M, Fernández-Pavón A, del Castillo S, Pascual-García T, García-Méndez E, Dal-Ré R.Pardo A, et al.Br J Clin Pharmacol. 1999 Apr;47(4):441-4. doi: 10.1046/j.1365-2125.1999.00916.x.Br J Clin Pharmacol. 1999.PMID: 10233210Free PMC article.Clinical Trial.