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Emanuel JR, Garetz S, Stone L, Levenson R.Emanuel JR, et al. Among authors: levenson r.Proc Natl Acad Sci U S A. 1987 Dec;84(24):9030-4. doi: 10.1073/pnas.84.24.9030.Proc Natl Acad Sci U S A. 1987.PMID: 2827165Free PMC article.
Kent RB, Fallows DA, Geissler E, Glaser T, Emanuel JR, Lalley PA, Levenson R, Housman DE.Kent RB, et al. Among authors: levenson r.Proc Natl Acad Sci U S A. 1987 Aug;84(15):5369-73. doi: 10.1073/pnas.84.15.5369.Proc Natl Acad Sci U S A. 1987.PMID: 2885848Free PMC article.
Schneider JW, Mercer RW, Caplan M, Emanuel JR, Sweadner KJ, Benz EJ Jr, Levenson R.Schneider JW, et al. Among authors: levenson r.Proc Natl Acad Sci U S A. 1985 Sep;82(18):6357-61. doi: 10.1073/pnas.82.18.6357.Proc Natl Acad Sci U S A. 1985.PMID: 2994074Free PMC article.