The emergence of radiation oncology as a distinct medical specialty.
D002173:Cancer Care Facilities / Q000600:supply & distribution; D006801:Humans; D007396:Internship and Residency; D008495:Medical Oncology / Q000193:education; D008511:Medicine; D009369:Neoplasms / Q000532:radiotherapy*; D011871:Radiology / Q000193:education; D012109:Research Support as Topic / Q000191:economics; D012955:Societies, Medical; D013038:Specialization; D014481:United States; D000078329:Workforce