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Saur D, Vanderwinden JM, Seidler B, Schmid RM, De Laet MH, Allescher HD.Saur D, et al. Among authors: de laet mh.Proc Natl Acad Sci U S A. 2004 Feb 10;101(6):1662-7. doi: 10.1073/pnas.0305473101. Epub 2004 Feb 2.Proc Natl Acad Sci U S A. 2004.PMID: 14757827Free PMC article.