1. Department of Aquatic Animal Health, Faculty of Veterinary Medicine, University of Tehran, Post Office Box 14155-6453, Tehran, Iran
2. Department of Pathology, Faculty of Veterinary Medicine, University of Tehran, Post Office Box 14155-6453, Tehran, Iran
3. Department of Surgery and Radiology, Faculty of Veterinary Medicine, University of Tehran, Post Office Box 14155-6453, Tehran, Iran