1. Department of Radiation Oncology and Image-applied Therapy, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan
2. Japanese Red Cross Wakayama Medical Center, 4-20 Komatsubara-dori, Wakayama City, Wakayama, Japan
3. Department of Urology, Kyoto University Graduate School of Medicine, 54 Shogoin Kawahara-cho, Sakyo-ku, Kyoto, Japan