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Huckle WR, Dy RC, Earp HS.Huckle WR, et al. Among authors: earp hs.Proc Natl Acad Sci U S A. 1992 Sep 15;89(18):8837-41. doi: 10.1073/pnas.89.18.8837.Proc Natl Acad Sci U S A. 1992.PMID: 1382299Free PMC article.