1. Department of Urology; National Hospital Organization Nagoya Medical Center; Nagoya Japan
2. Department of Pathology; Japanese Red Cross Nagoya Daini Hospital; Nagoya Japan
3. Department of Urology, Graduate School of Medicine; Nagoya University; Nagoya Japan
4. Laboratory of Clinical, Epidemiological and Health Services Research, Department of Clinical Research Promotion, Clinical Research Center; National Hospital Organization Nagoya Medical Center; 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