1. Department of Orthopaedic Surgery, Nagoya University School of Medicine, Showa-ku, Nagoya, Japan
2. Central Research Laboratories, Seikagaku Corporation, Higashiyamato-shi, Tokyo, Japan
3. Veterinary Internal Medicine, Nihon University, College of Bioresource Sciences, Fujisawa Kanagawa, Japan
4. Veterinary Physiology, Nihon University, College of Bioresource Sciences, Fujisawa Kanagawa, Japan