Mastectomy or breast conservation?
D001943:Breast Neoplasms / Q000532:radiotherapy / Q000601:surgery*; D002986:Clinical Trials as Topic; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008197:Lymph Node Excision; D008408:Mastectomy / Q000379:methods*; D009364:Neoplasm Recurrence, Local; D011897:Random Allocation