1. Tokai University, School of Medicine, Department of Urology, Kanagawa, Japan
2. The Cancer Registration Committee of the Japanese Urological Association, Tokyo, Japan
3. Hokkaido University, Graduate School of Medicine, Department of Renal and Genitourinary Surgery, Hokkaido, Japan
4. Iwate Medical University, School of Medicine, Department of Urology, Iwate, Japan
5. Tokyo Women's Medical University Medical Center East, Department of Urology, Tokyo, Japan
6. Nippon Medical School of Medicine, Department of Urology, Tokyo, Japan
7. The University of Tokyo, Graduate School of Medicine, Department of Urology, Tokyo, Japan
8. National Cancer Center Hospital, Urology Division, Tokyo, Japan
9. Hamamatsu University, School of Medicine Faculty of Medicine, Department of Urology, Shizuoka, Japan
10. Osaka University, Graduate School of Medicine, Department of Urology, Osaka, Japan
11. Kyoto Prefectural University of Medicine, Department of Urology, Kyoto, Japan
12. Tokushima Municipal Hospital, Department of Urology, Tokushima, Japan
13. Tokushima University, Graduate School of Biomedical Sciences, Department of Urology, Tokushima, Japan
14. Kyushu University, Graduate School of Medical Sciences, Department of Urology, Fukuoka, Japan