First do no harm.
D001943:Breast Neoplasms / Q000175:diagnosis* / Q000401:mortality / Q000628:therapy; D004992:Ethics, Medical; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data*; D011471:Prostatic Neoplasms / Q000175:diagnosis* / Q000401:mortality / Q000628:therapy; D018570:Risk Assessment; D019564:Unnecessary Procedures / Q000009:adverse effects* / Q000523:psychology*