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; Sapporo Hokkaido 060-0810 Japan
3. Department of Molecular Genetics; The Jikei University School of Medicine; Minato-ku Tokyo 105-0003 Japan
4. Department of Microbiology; Kohno Clinical Medicine Research Institute; Shinagawa-ku Tokyo 140-0001 Japan
5. Department of Laboratory Medicine; The Jikei University School of Medicine; Minato-ku Tokyo 105-0003 Japan