When considering attacks against the National Breast Screening Study, consider the sources.
Goldman
B
B
D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000517:prevention & control*; D002170:Canada; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008327:Mammography / Q000706:statistics & numerical data*; D008403:Mass Screening / Q000592:standards*