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Reeves R, Langan TA, Nissen MS.Reeves R, et al. Among authors: nissen ms.Proc Natl Acad Sci U S A. 1991 Mar 1;88(5):1671-5. doi: 10.1073/pnas.88.5.1671.Proc Natl Acad Sci U S A. 1991.PMID: 2000376Free PMC article.