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Levsen A, Lunestad BT.Levsen A, et al. Among authors: lunestad bt.Vet Parasitol. 2010 Aug 4;171(3-4):247-53. doi: 10.1016/j.vetpar.2010.03.039. Epub 2010 Apr 2.Vet Parasitol. 2010.PMID: 20413223