1. Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, Istanbul University, Avcılar, 34320 Istanbul, Turkey
2. Department of Surgery, Faculty of Veterinary Medicine, Istanbul University, Avcılar, 34320 Istanbul, Turkey
3. Department of Microbiology, Faculty of Veterinary Medicine, Istanbul University, Avcılar, 34320 Istanbul, Turkey