1. Department of Urology Nagoya University Graduate School of Medicine Nagoya Japan
2. Department of Biostatistics and Bioinformatics Graduate School of Medicine, The University of Tokyo Tokyo Japan
3. Statistical Analysis Section, Center for Advanced Medicine and Clinical Research Nagoya University Hospital Nagoya Japan
4. Department of Urology Toyohashi Municipal Hospital Toyohashi Japan
5. Department of Urology Japanese Red Cross Nagoya Daini Hospital Nagoya Japan
6. Department of Urology Komaki City Hospital Komaki Japan
7. Department of Urology JCHO Chukyo Hospital Nagoya Japan
8. Department of Urology Japanese Red Cross Nagoya Daiichi Hospital Nagoya Japan
9. Department of Surgical Pathology Aichi Medical University, School of Medicine Nagakute Japan