title: Tamoxifen versus surgery in elderly patients with breast cancer.
mesh_terms: D000368:Aged; D001943:Breast Neoplasms / Q000188:drug therapy / Q000532:radiotherapy / Q000601:surgery*; D003131:Combined Modality Therapy; D006801:Humans; D013629:Tamoxifen / Q000627:therapeutic use*
chemical_list: D013629:Tamoxifen