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Larsen LE, Tjørnehøj K, Viuff B, Jensen NE, Uttenthal A.Larsen LE, et al. Among authors: viuff b.J Vet Diagn Invest. 1999 Sep;11(5):416-22. doi: 10.1177/104063879901100505.J Vet Diagn Invest. 1999.PMID: 12968754
Trebbien R, Larsen LE, Viuff BM.Trebbien R, et al.Virol J. 2011 Sep 8;8:434. doi: 10.1186/1743-422X-8-434.Virol J. 2011.PMID: 21902821Free PMC article.