1. Department of Urology; Shiga University of Medical Science; Shiga Japan
2. Department of Urology; Kyorin University Hospital; Tokyo Japan
3. Department of Urology and Andrology; Kansai Medical University; Osaka Japan
4. Department of Urology; Oita University; Oita Japan
5. Department of Urology; Tokyo Dental College Ichikawa General Hospital; Chiba Japan
6. Department of Urology; Akita University Graduate School of Medicine; Akita Japan
7. Department of Urology; Tokai University School of Medicine; Kanagawa Japan
8. Department of Urology; Hiroshima University; Hiroshima Japan
9. Department of Urology; Shizuoka General Hospital; Shizuoka Japan