Radiotherapy and breast conservation.
D001943:Breast Neoplasms / Q000401:mortality / Q000523:psychology / Q000532:radiotherapy*; D004307:Dose-Response Relationship, Radiation; D005060:Europe; D005260:Female; D006801:Humans; D008408:Mastectomy / Q000401:mortality / Q000523:psychology; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology; D014481:United States