1. Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University. 1–21–24 Korimoto, Kagoshima 890–0065, Japan
2. Laboratory of Surgery, Joint Faculty of Veterinary Medicine, Kagoshima University. 1–21–24 Korimoto, Kagoshima 890–0065, Japan
3. Laboratory of Histopathology, Joint Faculty of Veterinary Medicine, Kagoshima University. 1–21–24 Korimoto, Kagoshima 890–0065, Japan
4. Laboratory of Diagnostic Imaging, Joint Faculty of Veterinary Medicine, Kagoshima University. 1–21–24 Korimoto, Kagoshima 890–0065, Japan