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Hofrichter J, Ross PD, Eaton WA.Hofrichter J, et al. Among authors: eaton wa.Proc Natl Acad Sci U S A. 1976 Sep;73(9):3035-9. doi: 10.1073/pnas.73.9.3035.Proc Natl Acad Sci U S A. 1976.PMID: 9640Free PMC article.