title: The Two-County breast screening trial cannot provide a reliable estimate of the effect of breast cancer screening.
authors.forename: Karsten Juhl
authors.initials: KJ
authors.lastname: Jørgensen
authors.forename: John D
authors.initials: JD
authors.lastname: Keen
authors.forename: Per-Henrik
authors.initials: PH
authors.lastname: Zahl
authors.forename: Peter C
authors.initials: PC
authors.lastname: Gøtzsche
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008327:Mammography / Q000706:statistics & numerical data*; D008403:Mass Screening / Q000706:statistics & numerical data*