1. Department of Urology Kobe University Graduate School of Medicine Kobe Japan
2. Department of Urology, Graduate School of Biomedical and Health Sciences Hiroshima University Hiroshima Japan
3. Division of Urology, Department of Surgery Tottori University Faculty of Medicine Yonago Japan
4. Department of Urology Fujita Health University School of Medicine Toyoake Japan
5. Department of Urology Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
6. Department of Urology, Institute of Biochemical Sciences Tokushima University, Graduate School Tokushima Japan
7. Department of Urology St. Luke's International Hospital Tokyo Japan
8. Department of Urology Juntendo University Graduate School of Medicine Tokyo Japan
9. Department of Nephro‐urology Nagoya City University Graduate School of Medical Sciences Nagoya Japan
10. Department of Urology Nagoya University Graduate School of Medicine Nagoya Japan
11. Department of Urology Hirosaki University Graduate School of Medicine Hirosaki Japan
12. Department of Urology Akita University School of Medicine Akita Japan
13. Department of Urology Tohoku University Graduate School of Medicine Sendai Japan
14. Department of Urology, Graduate School of Medical Sciences Kyushu University Fukuoka Japan