1. Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine Ghent University Merelbeke Belgium
2. Department of Gastroenterology and Hepatology University Hospital Antwerp, Antwerp University Edegem Belgium
3. Department of Gastroenterology and Hepatology General Hospital Groeninge Kortrijk Belgium
4. Department of Pathological Anatomy General Hospital Groeninge Kortrijk Belgium
5. Department of Gastroenterology and Hepatology General Hospital Maria Middelares Ghent Belgium