title: German mammography screening program: quality assurance.
authors.forename: Maria
authors.initials: M
authors.lastname: Blettner
authors.forename: Sylke Ruth
authors.initials: SR
authors.lastname: Zeissig
mesh_terms: D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D055088:Early Detection of Cancer / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008327:Mammography / Q000706:statistics & numerical data*; D008403:Mass Screening / Q000706:statistics & numerical data*; D012042:Registries