1. Small Animal Department, Faculty of Veterinary Medicine; Ghent University; Salisburylaan 133, Merelbeke 9820 Belgium
2. Department of Pathology, Bacteriology and Poultry Diseases, Faculty of Veterinary Medicine; Ghent University; Salisburylaan 133, Merelbeke 9820 Belgium
3. Dierenziekenhuis Zeeuws-Vlaanderen; Van Diemenstraat 83, Terneuzen 4535 AR The Netherlands