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Innis MA, Tokunaga M, Williams ME, Loranger JM, Chang SY, Chang S, Wu HC.Innis MA, et al. Among authors: chang s, chang sy.Proc Natl Acad Sci U S A. 1984 Jun;81(12):3708-12. doi: 10.1073/pnas.81.12.3708.Proc Natl Acad Sci U S A. 1984.PMID: 6374664Free PMC article.