1. Department of Urology; Graduate School of Medicine; Chiba University; Chiba Japan
2. Department of Urology; Kanazawa Medical University; Uchinada Ishikawa Japan
3. Department of Nephro-Urology; Graduate School of Medical Sciences; Nagoya City University; Nagoya Aichi Japan
4. Department of Urology; Osaka City University Graduate School of Medicine; Osaka Japan
5. Department of Public Health; Graduate School of Medicine; Chiba University; Chiba Japan
6. Department of Urology; Doai Memorial Hospital; Tokyo Japan
7. Department of Urology; Harasanshin Hospital; Fukuoka Japan
8. Department of Urology; Hasegawa Hospital; Tokyo Japan
9. Department of Urology; Kyoritsu General Hospital; Nagoya Aichi Japan
10. Department of Urology; International University of Health and Welfare Mita Hospital; Tokyo Japan
11. Department of Urology; Kaizuka City Hospital; Osaka Japan
12. Department of Urology; Kurashiki Medical Center; Kurashiki Okayama Japan
13. Department of Urology; Kitasaito Hospital; Sagamihara Kanagawa Japan
14. Department of Urology; Tokyo Metropolitan Ohtsuka Hospital; Tokyo Japan
15. Department of Urology; Osaka Rosai Hospital; Sakai Osaka Japan
16. Department of Urology and Andrology; Kansai Medical University; Hirakata Osaka Japan
17. Department of Urology; JCHO Tokyo Shinjuku Medical Center; Tokyo Japan