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Charles BK, Day JE, Rollins DE, Andrenyak D, Ling W, Wilkins DG.Charles BK, et al.J Anal Toxicol. 2003 Oct;27(7):412-28. doi: 10.1093/jat/27.7.412.J Anal Toxicol. 2003.PMID: 14606994
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