1. Department of Urology University of Tsukuba Tsukuba Ibaraki Japan
2. Department of Urology International University of Health and Welfare Narita Chiba Japan
3. International Medical Center University of Tsukuba Affiliated Hospital Tsukuba Ibaraki Japan
4. Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine University of Tsukuba Tsukuba Ibaraki Japan
5. Tsukuba Clinical Research and Development Organization (T‐CReDO), Faculty of Medicine University of Tsukuba Tsukuba Ibaraki Japan
6. Department of Pathology, Faculty of Medicine University of Tsukuba Tsukuba Ibaraki Japan
7. Department of Urology Hokkaido University Graduate School of Medicine Sapporo Hokkaido Japan
8. Department of Urology Tohoku University Graduate School of Medicine Sendai Miyagi Japan
9. Department of Breast and Medical Oncology National Cancer Center Hospital Chuo‐ku Tokyo Japan
10. Department of Urology Kanagawa Cancer Center Yokohama Kanagawa Japan
11. Department of Urology Kyoto Prefectural University of Medicine Kyoto Kyoto Japan
12. Department of Urology Osaka International Cancer Institute Osaka Osaka Japan
13. Department of Urology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Okayama Japan