Antognoni M T, Spaterna A, Lepri E, Fruganti A, Laus F
Department of Clinical Sciences, Section of Internal Medicine, Faculty of Veterinary Medicine, University of Perugia, Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:727-30. doi: 10.1023/b:verc.0000014258.64713.ca.