title: Cooperative clinical trials in primary breast cancer: a critical appraisal.
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000188:drug therapy / Q000401:mortality / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D002369:Castration; D002986:Clinical Trials as Topic; D003718:Denmark; D004739:England; D005069:Evaluation Studies as Topic; D005260:Female; D005387:Finland; D005500:Follow-Up Studies; D006801:Humans; D008131:London; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000528:radiation effects; D008408:Mastectomy; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D009664:Norway; D010053:Ovary; D011446:Prospective Studies; D012107:Research Design; D012606:Scotland; D013548:Sweden