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Kelly DP, Whelan AJ, Ogden ML, Alpers R, Zhang ZF, Bellus G, Gregersen N, Dorland L, Strauss AW.Kelly DP, et al. Among authors: zhang zf.Proc Natl Acad Sci U S A. 1990 Dec;87(23):9236-40. doi: 10.1073/pnas.87.23.9236.Proc Natl Acad Sci U S A. 1990.PMID: 2251268Free PMC article.