Negrini S, Valentini S, Spinella G, Fedrigo M
Surgical Section of Veterinary Clinical Department, Faculty of Veterinary Medicine, University of Bologna, Via Tolara di sopra, 50, 40064 Ozzano Emilia (Bologna), Italy.
Vet Res Commun. 2003 Sep;27 Suppl 1:411-4. doi: 10.1023/b:verc.0000014192.40813.78.