1. Department of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4-101 Koyama-Minami, Tottori 680-8553, Japan
2. School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura, Hachioji, Tokyo 192-0982, Japan
3. NRL Pharma, Inc., #203 KSP East, 3-2-1 Sakato, Takatsu-ku, Kawasaki, Kanagawa, 213-0012, Japan