1. Clinic of Medicine, Faculty of Veterinary Medicine, University of Thessaly, Karditsa, Greece.
2. Department of Pathology, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.
3. Directorate General of Veterinary Services, Ministry of Rural Development and Food, Athens, Greece.
4. Farm Animal Clinic, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece.