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O'Toole PW, Stenberg L, Rissler M, Lindahl G.O'Toole PW, et al. Among authors: stenberg l.Proc Natl Acad Sci U S A. 1992 Sep 15;89(18):8661-5. doi: 10.1073/pnas.89.18.8661.Proc Natl Acad Sci U S A. 1992.PMID: 1528877Free PMC article.