1. Department of Urology; Hyogo College of Medicine; Nishinomiya Hyogo Japan
2. Department of Urology; Kobe University Graduate School of Medicine; Kobe Hyogo Japan
3. Department of Urology; Jikei University; Tokyo Japan
4. Department of Urology; Okayama University Hospital; Okayama Kagawa Japan
5. Department of Urology; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
6. Department of Urology; Graduate School of Medicine; Gifu University; Gifu Japan
7. Department of Urology; Sapporo Medical University School of Medicine; Sapporo Hokkaido Japan
8. Department of Urology; Fujita Health University School of Medicine; Toyoake Aichi Japan
9. Department of Urology; University of Occupational and Environmental Health; Kitakyushu Fukuoka Japan