1. Institute of Life Science, Kurume University, Kurume 839-0861, Japan
2. Second Department of Internal Medicine, Faculty of Medicine, Kurume University, Asahi-machi, Kurume 830-0011, Japan
3. Department of Urology, Oita Medical University, Oita 879-5593, Japan
4. First Department of Internal Medicine, Faculty of Medicine, Kurume University, Asahi-machi, Kurume 830-0011, Japan
5. Division of Immunobiology, Research Institute for Biological Sciences, Science University of Tokyo, Noda 278-0022, Japan
6. Genome Information Research Center, Osaka University, Osaka 565-0871, Japan
7. Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
8. Yakult Central Institute for Microbiological Research, Kunitachi, Tokyo 186-8650, Japan