Key points are not available for this paper at this time.
See related commentary by Gøtzsche on page 19571 and at www.cmaj.ca/lookup/doi/10.1503/cmaj.1117212 Of the newly diagnosed cases of breast cancer in Canada, 80% were in women over the age of 50 years, and about 28% were in women aged 70 years or older (Figure 13),14 with little
A 2011 study studied this question.
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