title: Bias when calculating breast cancer mortality after screening mammography in British Colombia.
authors.forename: Per-Henrik
authors.initials: PH
authors.lastname: Zahl
mesh_terms: D001943:Breast Neoplasms / Q000401:mortality*; D001955:British Columbia / Q000453:epidemiology; D005260:Female; D006801:Humans; D008327:Mammography / Q000706:statistics & numerical data*; D015588:Observer Variation