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Fretheim A, Håvelsrud K, Oxman AD.Fretheim A, et al. Among authors: havelsrud k.Implement Sci. 2006 Aug 25;1:19. doi: 10.1186/1748-5908-1-19.Implement Sci. 2006.PMID: 16934153Free PMC article.
Fretheim A, Håvelsrud K, Flottorp S, Oxman AD.Fretheim A, et al. Among authors: havelsrud k.Tidsskr Nor Laegeforen. 2003 Mar 20;123(6):795-6.Tidsskr Nor Laegeforen. 2003.PMID: 12693118Free article.Norwegian.No abstract available.
Treweek S, Flottorp S, Fretheim A, Håvelsrud K, Kristoffersen DT, Oxman A, Aasland OG.Treweek S, et al. Among authors: havelsrud k.Tidsskr Nor Laegeforen. 2005 Feb 3;125(3):300-3.Tidsskr Nor Laegeforen. 2005.PMID: 15702152Free article.Norwegian.
Treweek S, Flottorp S, Fretheim A, Håvelsrud K, Kristoffersen DT, Oxman A, Aasland OG.Treweek S, et al. Among authors: havelsrud k.Tidsskr Nor Laegeforen. 2005 Feb 3;125(3):304-6.Tidsskr Nor Laegeforen. 2005.PMID: 15702153Free article.Norwegian.