1. Department of Veterinary Medicine, United Graduate School of Veterinary Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan
2. Faculty of Applied Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan
3. Laboratory of Pharmaceutical Engineering, Gifu Pharmaceutical University, 1–25–4 Daigaku-Nishi, Gifu 501–1196, Japan
4. Shibayagi Co., Ltd., 1062–1 Ishihara, Shibukawa City, Gunma 377–0007, Japan