1. Department of Urology and Andrology; Kansai Medical University; Hirakata
2. Department of Urology; Kyoto University
3. Department of Radiation Oncology and Image-Applied Therapy; Graduate School of Medicine; Kyoto University
4. Department of Urology; Faculty of Medicine; Miyazaki University; Miyazaki; Japan
5. Department of Healthcare Epidemiology; Graduate School of Medicine and Public Health; Kyoto University; Kyoto