1. Clinic for Small Animals, Surgical Department, Justus Liebig University, Giessen, Germany
2. Clinic for Small Animals, Department of Dermatology, Justus Liebig University, Giessen, Germany
3. Institute of Hygiene and Infectious Diseases of Animals, Justus Liebig University, Giessen, Germany
4. Institute of Veterinary Pathology, Justus Liebig University, Giessen, Germany
5. Friedrich-Loeffler-Institute/Federal Research Institute for Animal Health, Institute of Molecular Pathogenesis, Jena, Germany