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Orstavik KH, Strømme P, Ek J, Torvik A, Skjeldal OH.Orstavik KH, et al. Among authors: torvik a.J Med Genet. 1997 Oct;34(10):849-51. doi: 10.1136/jmg.34.10.849.J Med Genet. 1997.PMID: 9350820Free PMC article.
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Torvik A, Maehlen J.Torvik A, et al.Tidsskr Nor Laegeforen. 1990 May 20;110(13):1715-7.Tidsskr Nor Laegeforen. 1990.PMID: 2368056Norwegian.No abstract available.