Present status and problems of radiation oncology in Japan.
Yamashita
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D007564:Japan; D011785:Quality Assurance, Health Care; D018787:Radiation Oncology / Q000458:organization & administration / Q000592:standards* / Q000706:statistics & numerical data; D011878:Radiotherapy / Q000706:statistics & numerical data; D014481:United States; D014495:Universities / Q000458:organization & administration