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Ptolemy AS, Britz-McKibbin P.Ptolemy AS, et al.J Chromatogr A. 2006 Feb 17;1106(1-2):7-18. doi: 10.1016/j.chroma.2005.11.012. Epub 2005 Dec 5.J Chromatogr A. 2006.PMID: 16336972Review.