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Brenowitz EA, Lent K.Brenowitz EA, et al. Among authors: lent k.Proc Natl Acad Sci U S A. 2002 Sep 17;99(19):12421-6. doi: 10.1073/pnas.192308799. Epub 2002 Sep 6.Proc Natl Acad Sci U S A. 2002.PMID: 12218180Free PMC article.