Informed consent.
D001943:Breast Neoplasms / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D002986:Clinical Trials as Topic; D004992:Ethics, Medical; D005260:Female; D049711:History, Modern 1601-; D006801:Humans; D007258:Informed Consent; D008408:Mastectomy; D006113:United Kingdom