Conti M B, Marchesi M C, Rueca F, Puccetti M
Department of Clinical Sciences: Section of Internal Medicine, Faculty of Veterinary Medicine, University of Perugia, Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:739-43. doi: 10.1023/b:verc.0000014261.20482.49.