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van Dinten LC, den Boon JA, Wassenaar AL, Spaan WJ, Snijder EJ.van Dinten LC, et al. Among authors: snijder ej.Proc Natl Acad Sci U S A. 1997 Feb 4;94(3):991-6. doi: 10.1073/pnas.94.3.991.Proc Natl Acad Sci U S A. 1997.PMID: 9023370Free PMC article.