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Williams GH, Romanowski P, Morris L, Madine M, Mills AD, Stoeber K, Marr J, Laskey RA, Coleman N.Williams GH, et al.Proc Natl Acad Sci U S A. 1998 Dec 8;95(25):14932-7. doi: 10.1073/pnas.95.25.14932.Proc Natl Acad Sci U S A. 1998.PMID: 9843993Free PMC article.
Romanowski P, Madine MA, Laskey RA.Romanowski P, et al. Among authors: madine ma.Proc Natl Acad Sci U S A. 1996 Sep 17;93(19):10189-94. doi: 10.1073/pnas.93.19.10189.Proc Natl Acad Sci U S A. 1996.PMID: 8816774Free PMC article.