Affiliation: | 1. JCOG Data Center/Operations Office, Multi-institutional Clinical Trial Support Center, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan 2. National Cancer Center Hospital East, Kashiwa, Japan 3. Center for Cancer Control and Information Services, National Cancer Center, Tokyo, Japan 4. National Cancer Center Hospital, Tokyo, Japan 5. Cancer Institute Hospital, Tokyo, Japan 6. Hyogo College of Medicine, Nishinomiya, Japan
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