1. School of Veterinary Medicine, Rakuno Gakuen University, Bunkyodai, Midorimachi 582, Ebetsu, Hokkaido 069-8501, Japan
2. Makino School of Continuing and Non-Formal Education, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad 211007, Uttar Pradesh, India
3. Cyclotron Research Center, Iwate Medical University, 348-58 Tomegamori, Takizawa, Iwate 020-0603, Japan