1. Department of Breast Surgery, Misugi-kai Sato Hospital, 65-1 Yabuhigashi-machi, Hirakata-shi, Osaka 573-1124, Japan
2. Department of Biotechnology, Institute of Research and Innovation, 1201 Takada, Kashiwa 277-0861, Japan
3. Department of Cell Biology, Catholic University of Daegu, School of Medicine, 3056-6 Daemyung-4-Dong, Nam-gu, Daegu 705-718, Republic of Korea
4. Center for Public Health Informatics, National Institute of Public Health, 2-3-6 Minami, Wako, Saitama 351-0197, Japan
5. Magae Bioscience Institute, 49-4 Fujimidai, Tsukuba 300-1263, Japan
6. Radiation Safety Research Center, Nuclear Technology Research Laboratory, Central Research Institute of Electric Power Industry, 2-11-1 Iwado Kita, Komae, Tokyo 201-8511, Japan