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Christensen LL, Madsen BE, Wikman FP, Wiuf C, Koed K, Tjønneland A, Olsen A, Syvänen AC, Andersen CL, Orntoft TF.Christensen LL, et al. Among authors: olsen a.BMC Med Genet. 2008 Jun 11;9:52. doi: 10.1186/1471-2350-9-52.BMC Med Genet. 2008.PMID: 18547406Free PMC article.