1. Section of Medical Imaging, Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea.
2. Laboratory of Veterinary Internal Medicine, Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea.
3. Veterinary Medical Imaging, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea.