On being the right size: a reappraisal of mammography trials in Canada and Sweden.
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D000328:Adult; D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000401:mortality; D002170:Canada / Q000453:epidemiology; D005260:Female; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D016032:Randomized Controlled Trials as Topic; D015996:Survival Rate; D013548:Sweden / Q000453:epidemiology