title: Canadian National Breast Screening Study.
authors.forename: D B
authors.initials: DB
authors.lastname: Kopans
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000401:mortality / Q000517:prevention & control*; D002170:Canada / Q000453:epidemiology; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008403:Mass Screening; D008875:Middle Aged; D013548:Sweden / Q000453:epidemiology