1. Department of Biochemistry, Teikyo University School of Medicine, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
2. Department of Innovative Cancer Therapeutics, Chiba Cancer Center Research Institute, Nitona, Chuoh-ku, Chiba 260-8717, Japan
3. Medical Education Center, Teikyo University School of Medicine, Kaga, Itabashi-ku, Tokyo 173-8605, Japan
4. Department of Internal Medicine, Teikyo University School of Medicine, Kaga, Itabashi-ku, Tokyo 173-8605, Japan