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Breast cancer incidence in SEER 9 registries since 1976. Upper panel: Increase in annual incidence of in situ and localized breast cancer from prescreening mammography (1976–1985) to postscreening steady state (1995–2010), age 40 and older. Lower panel: Average annual percentage change (AAPC) in breast cancer incidence 1976–2010 among women 35 to 39 years of age.
