Spaterna A, Antognoni M T, Cappuccini S, Tesei B
Veterinary Science Department, Clinical Section, Faculty of Veterinary Medicine, University of Camerino, Matelica, Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:441-3. doi: 10.1023/b:verc.0000014199.39879.bb.