Medical Journal Club article for February 2010:

New United States mammogram guidelines ignite debate | Canadian Family Physician Journal -

“On Nov. 16, 2009, the United States Preventative Services Task Force, a 16-member panel of experts appointed by the Department of Health and Human Services, released new guidelines for breast cancer screening. The guidelines recommend that women aged 50–74 have mammograms every two years instead of annually. The most controversial update, however, is the new guideline suggesting that regular breast cancer screening begin at age 50 instead of 40, as was suggested in the old guidelines.”

What are the Canadian guidelines?