1. Clinic for Small Animals, Internal Medicine, Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine Justus Liebig University Giessen Germany
2. Clinical Pathophysiology and Clinical Pathology, Department of Veterinary Clinical Sciences, Faculty of Veterinary Medicine Justus Liebig University Giessen Germany
3. Siemens Healthcare Laboratory Diagnostics Sudbury UK
4. Siemens Healthcare Diagnostics GmbH Vienna Austria