1. Clinic for Small Animal Surgery, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
2. Department of Clinical Veterinary Medicine, Clinic for Small Animal Internal Medicine, University of Bern, Länggassstrasse 128, 3012 Bern, Switzerland
3. Clinic for Small Animal Internal Medicine, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland