1. Department of Urology; Nagoya University Graduate School of Medicine; Nagoya Japan
2. Department of Urology; National Hospital Organization Nagoya Medical Center; Nagoya Japan
3. Department of Biostatistics and Bioinformatics; Graduate School of Medicine, The University of Tokyo; Tokyo Japan
4. Statistical Analysis Section; Center for Advanced Medicine and Clinical Research; Nagoya University Hospital; Nagoya 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; Japanese Red Cross Nagoya Daiichi Hospital; Nagoya Japan
8. Department of Surgical Pathology; School of Medicine; Aichi Medical University; Nagakute Japan