1. Divison of Bird, Rodents and Rabbit Clinic; Department of Clinical Sciences of Companion Animals and Equine; Faculty of Veterinary Medecine; University of Liège; Sart-Tilman 4000 Liège Belgium
2. Division of Bacteriology; Department of Infectious Diseases; Faculty of Veterinary Medicine; University of Liège; Sart-Tilman 4000 Liège Belgium