1. Department of Urology Akita University School of Medicine Akita Japan
2. Department of Urology Miyazaki University School of Medicine Miyazaki Japan
3. Department of Public Health Akita University School of Medicine Akita Japan
4. Department of Urology Chiba University School of Medicine Chiba Japan
5. Department of Urology Hirosaki University School of Medicine Hirosaki Japan
6. Department of Urology Kagawa University School of Medicine Kagawa Japan
7. Department of Urology National Cancer Center Hospital Tokyo Japan
8. Department of Urology, Graduate School of Medical Sciences Kyushu University Fukuoka Japan
9. Department of Urology Harasanshin Hospital Fukuoka Japan
10. Department of Urology Kitasato University School of Medicine Sagamihara Japan
11. Department of Urology Jikei University School of Medicine Tokyo Japan
12. Department of Urology University of Tsukuba Hospital Tsukuba Japan
13. Department of Urology Mie University School of Medicine Tsu Japan
14. Department of Radiation Oncology & Image‐applied Therapy Kyoto University Kyoto Japan
15. Department of Urology University of Toyama Faculty of Medicine Toyama Japan