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Palmer DK, O'Day K, Trong HL, Charbonneau H, Margolis RL.Palmer DK, et al. Among authors: margolis rl.Proc Natl Acad Sci U S A. 1991 May 1;88(9):3734-8. doi: 10.1073/pnas.88.9.3734.Proc Natl Acad Sci U S A. 1991.PMID: 2023923Free PMC article.