1. Department of Urology Sapporo Medical University School of Medicine Sapporo Japan
2. Nemuro City Hospital Nemuro Japan
3. Yakumo General Hospital Yakumo Japan
4. Hokkaido Prefectural Haboro Hospital Haboro Japan
5. Rumoi Municipal Hospital Rumoi Japan
6. Fukuzumi Urological Clinic Sapporo Japan
7. Saka Urological Hospital Sapporo Japan
8. Miyao Urological Clinic Muroran Japan
9. Department of Urology Steel Memorial Muroran Hospital Muroran Japan
10. Kamui Yawaragi Urological Clinic Asahikawa Japan
11. Iwasawa Clinic Sapporo Japan
12. Department of Urology Kushiro Red Cross Hospital Kushiro Japan
13. Teine Urological Clinic Sapporo Japan
14. Teine Ekimae Urological Clinic Sapporo Japan
15. Department of Urology Sapporo Central Hospital Sapporo Japan
16. Tokachi Urological Clinic Otofuke Japan
17. Obihiro Urological Clinic Obihiro Japan
18. Sanjukai Hospital Sapporo Japan
19. Department of Urology JCHO Hokkaido Medical Center Sapporo Japan
20. Nijuuyonken Urological Clinic Sapporo Japan
21. Hakodate Goryoukaku Hospital Hakodate Japan
22. Kaguraoka Urological Clinic Asahikawa Japan
23. Department of Urology Hokkaido Social Work Association Obihiro Hospital Obihiro Japan
24. Sorachi Kidney and Urological Clinic Takikawa Japan
25. Kuriyama Red Cross Hospital Kuriyama Japan
26. Hokkaido Social Work Association Toya Hospital Toyako Japan
27. JCHO Noboribetsu Medical Center Noboribetsu Japan