3 April 2012 Updated at 03:14 ET
Breast cancer screens leads to 'unnecessary treatment'
James Gallagher
Health and science reporter, BBC News
To screen or not to screen?
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Up to one-in-four breast cancers detected by screening would never have gone on to be fatal or cause any symptoms, US researchers say
link-
http://www.bbc.co.uk/news/health-17585735