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Ashworth M, Horan KL, Freeman R, Oren E, Narita M, Cangelosi GA.Ashworth M, et al. Among authors: freeman r.J Clin Microbiol. 2008 Mar;46(3):856-62. doi: 10.1128/JCM.01146-07. Epub 2008 Jan 3.J Clin Microbiol. 2008.PMID: 18174293Free PMC article.