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de Groot PG, Federici AB, de Boer HC, d'Alessio P, Mannucci PM, Sixma JJ.de Groot PG, et al. Among authors: federici ab.Proc Natl Acad Sci U S A. 1989 May;86(10):3793-7. doi: 10.1073/pnas.86.10.3793.Proc Natl Acad Sci U S A. 1989.PMID: 2657729Free PMC article.