title: ASTRO 45th annual meeting presidential address: Medicine's arrow, medicine's cycle: lessons for radiation oncology.
authors.forename: Joel E
authors.initials: JE
authors.lastname: Tepper
mesh_terms: D005260:Female; D049673:History, 20th Century; D006801:Humans; D008297:Male; D009369:Neoplasms / Q000503:physiopathology / Q000532:radiotherapy; D010506:Periodicals as Topic; D018787:Radiation Oncology / Q000266:history / Q000639:trends; D011853:Radiobiology; D012946:Social Welfare; D012955:Societies, Medical; D013995:Time