title: Use of breast-conserving therapy increases, but variations persist.
authors.forename: M J
authors.initials: MJ
authors.lastname: Friedrich
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000628:therapy*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D015412:Mastectomy, Segmental; D008875:Middle Aged; D009367:Neoplasm Staging; D016032:Randomized Controlled Trials as Topic; D012959:Socioeconomic Factors