Sforna M, Brachelente C, Lepri E, Mechelli L
Department of Veterinary Biopathological Sciences, Section of Veterinary Pathology and Hygiene, Faculty of Veterinary Medicine, University of Perugia, 06126 Perugia, Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:359-61. doi: 10.1023/b:verc.0000014180.77684.52.