title: [Symposium II - establishment of QC and QA of the external beam radiotherapy: present status and future. Introduction].
authors.forename: Yasumitsu
authors.initials: Y
authors.lastname: Kawagoe
mesh_terms: D005544:Forecasting; D011785:Quality Assurance, Health Care; D011786:Quality Control; D011878:Radiotherapy / Q000592:standards* / Q000639:trends