1. Oncology Center; Osaka University Hospital; 2-2 (D10), Yamadaoka Suita Osaka 565-0871 Japan
2. Soseikai CyberKnife Center; Fushimi-ku Kyoto 612-8248 Japan
3. Department of Radiation Oncology; Osaka University Graduate School of Medicine; 2-2 (D10), Yamadaoka Suita Osaka 565-0871 Japan