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Franks WT, Wylie BJ, Schmidt HL, Nieuwkoop AJ, Mayrhofer RM, Shah GJ, Graesser DT, Rienstra CM.Franks WT, et al. Among authors: graesser dt.Proc Natl Acad Sci U S A. 2008 Mar 25;105(12):4621-6. doi: 10.1073/pnas.0712393105. Epub 2008 Mar 14.Proc Natl Acad Sci U S A. 2008.PMID: 18344321Free PMC article.