1. Department of Medicine and Clinical Biology of Small Animals Faculty of Veterinary Medicine Ghent University Merelbeke Belgium
2. Clinical Research Unit National Veterinary School of Toulouse Toulouse Cedex 3 France
3. Department of Pharmacology, Toxicology and Biochemistry Faculty of Veterinary Medicine Ghent University Merelbeke Belgium
4. Department of Clinical Chemistry, Microbiology and Immunology Faculty of Health Medicine and Life Sciences Ghent University Gent Belgium