1. Oosagami Animal Clinic, 1-33-3 Laketown, Koshigaya, Saitama 343-0828, Japan
2. Chiba Institute of Science Faculty of Risk and Crisis Management, 15-8 Shiomi-cho, Choshi, Chiba 288-0025, Japan
3. Dokkyo Medical University Laboratory Animal Research Center, Kitakobayashi 880, Shimotsugagun Mibumachi, Tochigi 321-0207, Japan
4. Rakuno Gakuen University School of Veterinary Medicine, 582, Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan