1. Department of Internal Medicine, Faculty of Veterinary Medicine, University of Ondokuz Mayis, 55139 Samsun/Turkey
2. Department of Internal Medicine, Faculty of Veterinary Medicine, University of Adnan Menderes, 09016 Aydin/Turkey
3. Department of Parasitology, Faculty of Veterinary Medicine, University of Adnan Menderes, 09016 Aydin/Turkey
4. Department of Biochemistry, Faculty of Veterinary Medicine, University of Ondokuz Mayis, 55139 Samsun/Turkey