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Jiménez-Soto JM, Cárdenas S, Valcárcel M.Jiménez-Soto JM, et al.J Chromatogr A. 2010 May 14;1217(20):3341-7. doi: 10.1016/j.chroma.2010.03.016. Epub 2010 Mar 18.J Chromatogr A. 2010.PMID: 20363473Free article.