1. Dermatology Unit, Clinic for Small Animal Internal Medicine, Vetsuisse Faculty University of Zurich Zurich Switzerland
2. Institute for Veterinary Pathology, Vetsuisse Faculty University of Zurich Zurich Switzerland
3. Neurology Department, Clinic for Small Animal Surgery Vetsuisse Faculty Zurich Zurich Switzerland
4. Department of Dermatology University Hospital Lausanne and Faculty of Biology and Medicine, University of Lausanne Lausanne Switzerland