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Sagatun A, Søgaard AJ, Bjertness E, Selmer R, Heyerdahl S.Sagatun A, et al. Among authors: bjertness e.BMC Public Health. 2007 Jul 12;7:155. doi: 10.1186/1471-2458-7-155.BMC Public Health. 2007.PMID: 17626617Free PMC article.
Vatn AS, Bjertness E, Lien L.Vatn AS, et al. Among authors: bjertness e.Tidsskr Nor Laegeforen. 2007 Aug 9;127(15):1941-4.Tidsskr Nor Laegeforen. 2007.PMID: 17700736Free article.Norwegian.No abstract available.