1. Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
2. Galluvet, Lummen, Belgium
3. Degudap, Izegem, Belgium
4. Pehestat, Lummen, Belgium
5. Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium