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In addition, the early detection of breast cancers by the national breast screening programme has undoubtedly had a positive impact.
BBC: Breast cancer deaths plummet
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It could be that screening is detecting more oestrogen-receptor positive cancers because they are slow-growing and may be detected before symptoms appear.
BBC: Breast cancer biology 'changing'
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The Kerry campaign has been screening speeches all week to try to keep a positive emphasis.
CNN: Sharpton to Bush: Black vote 'is not for sale'
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Ibbotson tries to profit off the discount the market accords low-liquidity stocks by screening every six months or so for companies that have reported positive earnings over the previous year and that he expects to do so again.
FORBES: Magazine Article