1. Veterinary Teaching Hospital, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890‑0065, Japan
2. Joint Graduate School of Veterinary Medicine, Kagoshima University, Kagoshima 890‑0065, Japan
3. Department of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113‑8657, Japan
4. Hygiene and Health Promotion Medicine, Kagoshima University Graduate School of Medicine and Dental Science, Kagoshima University, Kagoshima 890‑0065, Japan
5. Department of Veterinary Histopathology, Joint Faculty of Veterinary Medicine, Kagoshima University, Kagoshima 890‑0065, Japan
6. Animal Medical Center, Tokyo University of Agriculture and Technology, Tokyo 183‑8538, Japan