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Olansky L, Myers GA, Pohl SL, Hewlett EL.Olansky L, et al. Among authors: hewlett el.Proc Natl Acad Sci U S A. 1983 Nov;80(21):6547-51. doi: 10.1073/pnas.80.21.6547.Proc Natl Acad Sci U S A. 1983.PMID: 6195660Free PMC article.