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Pérez-Urquiza M, Ferrer R, Beltrán JL.Pérez-Urquiza M, et al. Among authors: ferrer r.J Chromatogr A. 2000 Jun 23;883(1-2):277-83. doi: 10.1016/s0021-9673(00)00431-3.J Chromatogr A. 2000.PMID: 10910220