1. Dermatology Department, Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
2. Institute of Virology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
3. Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
4. Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
5. Institute of Veterinary Pathology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
6. Equine Department, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland