title: [Clinical trials on radiation oncology in Japan].
authors.forename: Masahiko
authors.initials: M
authors.lastname: Oguchi
mesh_terms: D002986:Clinical Trials as Topic / Q000941:ethics / Q000639:trends; D019317:Evidence-Based Medicine; D006801:Humans; D007564:Japan; D009369:Neoplasms / Q000532:radiotherapy*; D011785:Quality Assurance, Health Care; D011786:Quality Control; D012107:Research Design