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Ehinger B, Ottersen OP, Storm-Mathisen J, Dowling JE.Ehinger B, et al. Among authors: ottersen op.Proc Natl Acad Sci U S A. 1988 Nov;85(21):8321-5. doi: 10.1073/pnas.85.21.8321.Proc Natl Acad Sci U S A. 1988.PMID: 2903503Free PMC article.