1. Department of Biochemistry, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan
2. Department of Immunology, Duke University School of Medicine, 207 Research Drive, Durham, NC27710-3010, USA
3. Department of Molecular Biochemistry and Clinical Investigation, Osaka University Graduate School of Medicine, 1-7, Yamadaoka, Suita, Osaka 565-0871, Japan