[unable to retrieve full-text content]AP - Millions of people have endured a colonoscopy, believing the dreaded exam may help keep them from dying of colon cancer. For the first time, a major study offers clear evidence that it does.
Source: http://us.rd.yahoo.com/dailynews/rss/cancer/*http%3A//news.yahoo.com/s/ap/20120223/ap_on_he_me/us_med_colon_cancer_tests
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