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Hardmeier R, Hoeger H, Fang-Kircher S, Khoschsorur A, Lubec G.Hardmeier R, et al. Among authors: hoeger h.Proc Natl Acad Sci U S A. 1997 Jul 8;94(14):7572-6. doi: 10.1073/pnas.94.14.7572.Proc Natl Acad Sci U S A. 1997.PMID: 9207133Free PMC article.