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Luker KE, Smith MC, Luker GD, Gammon ST, Piwnica-Worms H, Piwnica-Worms D.Luker KE, et al.Proc Natl Acad Sci U S A. 2004 Aug 17;101(33):12288-93. doi: 10.1073/pnas.0404041101. Epub 2004 Jul 29.Proc Natl Acad Sci U S A. 2004.PMID: 15284440Free PMC article.