1. International Center for Medical Research and Treatment, Kobe University School of Medicine, Kobe 650-0017, Japan.
2. Division of Urology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
3. Institute for Advanced Medical Sciences, Hyogo College of Medicine, Nishinomiya 663-8501, Japan.
4. Department of Urology, Wakayama Medical University, Wakayama 641-8510, Japan.
5. Division of Radiology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
6. Division of Pediatrics, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.
7. Department of Obstetrics and Gynecology, Ehime University School of Medicine, Toon City 791-0295, Japan.
8. Department of Urology, Showa University School of Medicine, Tokyo 142-8666, Japan.
9. Department of Urology, University of Kyorin, Tokyo 181-8611, Japan.
10. Department of Urology, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
11. Department of Urology, Emory University School of Medicine, Atlanta, GA 30322, USA.
12. Kobe Red Cross Hospital, Kobe 651-0073, Japan.