Guidi A, Castigliego L, Preziuso S, Gaspari P, Gianfaldoni D, Del Bono G
Department of Animal Pathology, Prophylaxis and Food Hygiene, University of Pisa, Viale delle Piagge 2, Pisa, Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:687-90. doi: 10.1023/b:verc.0000014248.41842.08.