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Lin X, Barber DL.Lin X, et al. Among authors: barber dl.Proc Natl Acad Sci U S A. 1996 Oct 29;93(22):12631-6. doi: 10.1073/pnas.93.22.12631.Proc Natl Acad Sci U S A. 1996.PMID: 8901634Free PMC article.