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Chen HR, Tsao TY, Chen CH, Tsai WY, Her LS, Hsu MM, Cheng SC.Chen HR, et al. Among authors: tsao ty.Proc Natl Acad Sci U S A. 1999 May 11;96(10):5406-11. doi: 10.1073/pnas.96.10.5406.Proc Natl Acad Sci U S A. 1999.PMID: 10318896Free PMC article.