Godden Sandra, McGuirk Sheila M
Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, 225 VMC, 1365 Gortner Avenue, St. Paul, MN 55108, USA.
Vet Clin North Am Food Anim Pract. 2008 Mar;24(1):xi-xii. doi: 10.1016/j.cvfa.2007.12.002.