1. Department of Urology, Akita University Graduate School of Medicine, Akita 010-8543, Japan
2. Department of Urology, Nara Medical University, Kashihara 634-8521, Japan
3. Department of Urology, Faculty of Medicine, University of Tsukuba, Tsukuba 305-8576, Japan
4. Division of Urology, Faculty of Medicine, Tottori University, Tottori 683-8504, Japan
5. Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8563, Japan
6. Department of Urology, Nara Prefecture General Medical Center, Nara 630-8054, Japan
7. Department of Renal and Genitourinary Surgery, Graduate School of Medicine, Hokkaido University, Sapporo 060-8648, Japan
8. Department of Urology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
9. Department of Urology, Kitasato University School of Medicine, Sagamihara 252-0373, Japan
10. Department of Urology, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
11. Department of Urology, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
12. Departments of Urology, Kagawa University Faculty of Medicine, Takamatsu 761-0793, Japan
13. Department of Urology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
14. Department of Urology, Aichi Cancer Center, Nagoya 464-8681, Japan