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Ellingsen DG, Haug E, Gaarder PI, Bast-Pettersen R, Thomassen Y.Ellingsen DG, et al. Among authors: gaarder pi.Scand J Work Environ Health. 2003 Jun;29(3):230-8. doi: 10.5271/sjweh.726.Scand J Work Environ Health. 2003.PMID: 12828393Free article.