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Löytynoja A, Goldman N.Löytynoja A, et al. Among authors: goldman n.Proc Natl Acad Sci U S A. 2005 Jul 26;102(30):10557-62. doi: 10.1073/pnas.0409137102. Epub 2005 Jul 6.Proc Natl Acad Sci U S A. 2005.PMID: 16000407Free PMC article.