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Chen PJ, Wang JT, Hwang LH, Yang YH, Hsieh CL, Kao JH, Sheu JC, Lai MY, Wang TH, Chen DS.Chen PJ, et al. Among authors: chen ds.Proc Natl Acad Sci U S A. 1992 Jul 1;89(13):5971-5. doi: 10.1073/pnas.89.13.5971.Proc Natl Acad Sci U S A. 1992.PMID: 1321429Free PMC article.