title: Radiotherapy is a necessary adjuvant in the treatment of early breast cancer.
authors.forename: S H
authors.initials: SH
authors.lastname: Levitt
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000401:mortality / Q000532:radiotherapy*; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D008875:Middle Aged; D018714:Radiotherapy, Adjuvant; D016032:Randomized Controlled Trials as Topic