1. Dermatology Unit, Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
2. Division of Small Animal Emergency and Critical Care, Clinic for Small Animal Internal Medicine, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
3. Section of Anaesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, 8057 Zurich, Switzerland
4. Division of Allergy, University Clinic of Respiratory and Allergic Diseases Golnik, 4204 Golnik, Slovenia
5. Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia