De Meerschman F, Focant C, Detry J, Rettigner C, Cassart D, Losson B
Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Boulevard de Colonster 20, B-4000 Liège, Belgium.
Vet Rec. 2005 Jul 23;157(4):115-8. doi: 10.1136/vr.157.4.115.