1. Division of Integrative Medical Oncology, Saiseikai Kumamoto Hospital , 5-3-1 Chikami, Minami-ku, Kumamoto-Shi, Kumamoto 861-4193 , Japan
2. Department of Radiation Oncology, Juntendo University Graduate School of Medicine , 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421 , Japan
3. Department of Radiation Oncology, Saitama Medical Center, Saitama Medical University , 1981 Kamoda, Kawagoe-shi, Saitama 350-8550 , Japan
4. Department of Radiation Oncology, St. Marianna University Hospital , 2-16-1 Sugao, Miyamae, Kawasaki-shi, Kanagawa 216-8511 , Japan
5. Department of Radiation Oncology, Hokkaido University Hospital , Kita 14 Nishi 5, Kita-ku, Sapporo-shi, Hokkaido 060-8638 , Japan
6. Department of Radiology, Asahikawa Medical University , 2-1 Midorigaoka-Higashi, Asahikawa-shi, Hokkaido 078-8510 , Japan
7. Radiation Oncology Laboratory , Department of Medical Physics & Engineering, Graduate School of Medicine and Health Science, , 1-7 Yamadaoka, Suita-shi, Osaka 565-0871 , Japan
8. Osaka University , Department of Medical Physics & Engineering, Graduate School of Medicine and Health Science, , 1-7 Yamadaoka, Suita-shi, Osaka 565-0871 , Japan
9. Department of Radiation Oncology , Kita-Harima Medical Center, 926-250 Ichibacho, Ono-shi, Hyogo 675-1392 , Japan
10. Department of Radiation Oncology, Kyorin University , School of Medicine, 6-20-2 Shinkawa Mitaka-shi, Tokyo 181-8611 , Japan
11. Department of Radiation Oncology, Japanese Red Cross Maebashi Hospital , 389-1 Asakura-Machi, Maebashi-shi, Gunma 371-0811 , Japan
12. Department of Radiation Oncology, Isesaki Municipal Hospital , 12-1 Tsunatorihon-machi, Isesaki-Shi, Gunma 372-0817 , Japan
13. Department of Radiation Oncology, NHO Tokyo Medical Center , 2-5-1 Higashigaoka, Meguro-ku, Tokyo 152-8902 , Japan
14. Department of Radiation Oncology, Japanese Red Cross Society Kyoto Daiichi Hospital , 15-749 Honmachi, Higashiyama-ku, Kyoto-Shi, Kyoto 605-0981 , Japan
15. Department of Radiology, Dokkyo Medical University , 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun, Tochigi 321-0293 Japan
16. Radiation and Proton Therapy Center, Shizuoka Cancer Center , 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777 , Japan
17. Department of Radiation Oncology, NHO Kyoto Medical Center , 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto-shi, Kyoto 612-8555 , Japan
18. Department of Radiation Oncology, Sendai Kousei Hospital , 1-20 Sutsumidori, Amemiya, Aoba-ku, Sendai-shi, Miyagi 981-0914 , Japan
19. Department of Radiation Oncology, Seirei Mikatahara General Hospital , 3453 Mikatahara, Chuo-ku, Hamamatsu-shi, Shizuoka 433-8558 , Japan
20. Department of Radiation Oncology, Graduate School of Biomedical Health Sciences, Hiroshima University , 1-2-3 Kasumi, Minami-ku, Hiroshima-shi, Hiroshima 734-8551 , Japan
21. Department of Radiation Oncology, Nanbu Tokushukai Hospital , 171-1 Hokama, Yaese-cho, Shimajiri-gun, Okinawa 901-0493 , Japan
22. Department of Radiation Oncology, Dokkyo Medical University Saitama Medical Center , 2-1-50 Minamikoshigaya, Koshigaya-shi, Saitama 343-8555 , Japan
23. Department of Radiology, Akita University Graduate School of Medicine , 1-1-1 Hondo, Akita-shi, Akita 010-8543 , Japan
24. Department of Radiation Oncology, Saku Central Hospital Advanced Care Center , 3400-28 Nakagomi, Saku-shi, Nagano 385-0051 , Japan
25. Department of Radiation Oncology, Kawasaki Municipal Ida Hospital , 2-27-1 Ida, Nakahara-ku, Kawasaki,-shi, Kanagawa 211-0035 , Japan
26. Diagnostic Radiology and Radiation Oncology, Graduate School of Medicine, Chiba University , 1-8-1, Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670 , Japan
27. Department of Radiation Oncology, Fujieda Municipal General Hospital , 4-1-11 Surugadai, Fujieda-shi, Shizuoka 426-8677 , Japan
28. Department of Radiolgy, Showa General Hospital , 8-1-1 Hanakoganei, Kodaira-shi, Tokyo 187-8510 , Japan
29. Department of Radiology, Chiba Rosai Hospital , 2-16 Tatsumidai-higashi, Ichihara-shi, Chiba 290-0003 , Japan
30. Department of Radiology, University of Yamanashi , 1110 Shimokato, Chuo-shi, Yamanashi 409-3898 , Japan