1. Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
2. Division of Clinical Radiology, Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Bern, Switzerland
3. Institute of Animal Pathology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty University of Bern, Bern, Switzerland
4. Department of Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands