1. Institute for Infectious Diseases, University of Bern, Bern, Switzerland
2. Institute of Veterinary Bacteriology, University of Bern, Bern, Switzerland
3. Graduate School of Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
4. Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
5. Division of Small Animal Internal Medicine, Department of Clinical Veterinary Medicine, University of Bern, Bern, Switzerland
6. Division of Infectious Diseases and Hospital Epidemiology, University and University Hospital of Zurich, Zurich, Switzerland