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Glawischnig E, Hansen BG, Olsen CE, Halkier BA.Glawischnig E, et al. Among authors: hansen bg.Proc Natl Acad Sci U S A. 2004 May 25;101(21):8245-50. doi: 10.1073/pnas.0305876101. Epub 2004 May 17.Proc Natl Acad Sci U S A. 2004.PMID: 15148388Free PMC article.