1. Laboratory of Physiology II, Department of Veterinary Medicine, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan
2. Corporate Planning Department, Anicom Holdings, Inc., 8-17-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 160-0023, Japan
3. Tokyo Jonan Regional Veterinary Medicine Promotional Association Animal Medical Center, 8-19-12, Fukasawa, Setagaya-ku, Tokyo 158-0081, Japan