1. Department of Molecular Genetics, Kohno Clinical Medicine Research Institute, Shinagawa-ku, Tokyo 140-0001, Japan
2. Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Kita-ku, Sapporo 060, Japan
3. Department of Molecular Genetics, The Jikei University School of Medicine, Minato-ku, Tokyo 105-8461, Japan
4. Radioisotope Research Center, The Jikei University School of Medicine, Minato-ku, Tokyo 105-8461, Japan
5. Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo 105-8461, Japan
6. Department of Microbiology (II), The Jikei University School of Medicine, Minato-ku, Tokyo 105-8461, Japan