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Fertner ME, Olsen RH, Bisgaard M, Christensen H.Fertner ME, et al. Among authors: olsen rh.Acta Vet Scand. 2011 Oct 23;53(1):56. doi: 10.1186/1751-0147-53-56.Acta Vet Scand. 2011.PMID: 22017822Free PMC article.