1. Medizinische Kleintierklinik; Ludwig Maximilians University Munich; Munich Germany
2. Department of Pathology and Diagnostic Investigations, College of Veterinary Medicine, Michigan State University; Diagnostic Center for Population and Animal Health; Lansing MI USA
3. Tierklinik Hofheim; Im Langgewann 9; 65719 Hofheim/Taunus Germany
4. Department of Clinical Sciences of Companion Animals, Veterinary Faculty; Utrecht University; Utrecht The Netherlands
5. Klinik für Kleintiere; Tierärztliche Hochschule Hannover; Hannover Germany