1. Fujita Health University School of Medicine, Toyoake, Japan;
2. Yokohama City University Hospital, Yokohama, Japan;
3. Fujisawa City Hospital, Fujisawa, Japan;
4. Yokohama City University Medical Center, Yokohama, Japan;
5. National Hospital Organization Okayama Medical Center, Okayama, Japan;
6. Kyoto Prefectural University of Medicine, Kyoto, Japan;
7. Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan;
8. Tokai University School of Medicine, Isehara, Japan;
9. Hyogo Cancer Center, Akashi, Japan;
10. Hamamatsu University School of Medicine, Hamamatsu, Japan;
11. Kanazawa University Graduate School of Medical Science, Kanazawa, Japan;
12. Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan;
13. Nagoya University Graduate School of Medicine, Nagoya, Japan; and
14. National Cancer Center Hospital, Tokyo, Japan