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Sudweeks JD, Todd JA, Blankenhorn EP, Wardell BB, Woodward SR, Meeker ND, Estes SS, Teuscher C.Sudweeks JD, et al. Among authors: blankenhorn ep.Proc Natl Acad Sci U S A. 1993 Apr 15;90(8):3700-4. doi: 10.1073/pnas.90.8.3700.Proc Natl Acad Sci U S A. 1993.PMID: 8475118Free PMC article.