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Vogel I, Kesmodel U, Rasmussen S, Langhoff-Roos J, Jacobsson B.Vogel I, et al.BMJ. 2006 May 6;332(7549):1094. doi: 10.1136/bmj.332.7549.1094-a.BMJ. 2006.PMID: 16675825Free PMC article.No abstract available.