Lepri E, Ricci G, Leonardi L, Sforna M, Mechelli L
Department of Biopathological Sciences, Section of Veterinary Pathology and Hygiene, Faculty of Veterinary Medicine, University of Perugia, Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:707-9. doi: 10.1023/b:verc.0000014253.07296.0c.