1. Department of Urology, Keio University School of Medicine, Tokyo, Japan
2. Department of Urology, National Hospital Organization Tochigi Medical Center, Tochigi, Japan
3. Department of Urology, National Hospital Organization Saitama Hospital, Saitama, Japan
4. Department of Urology, Saitama City Hospital, Saitama, Japan
5. Department of Uro-Oncology, Saitama Medical University International Medical Center, Saitama, Japan
6. Department of Urology, Kawasaki Municipal Hospital, Kanagawa, Japan