The protective association between dietary vitamin C and breast cancer survival in our population was most evident among women with ER-negative/PR-negative tumours, although the interaction did not reach statistical significance.
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Vitamin C intake and breast cancer mortality in a cohort of Swedish women.
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The sentences
There was a borderline significant association between vitamin C intake and total mortality (HR=0.84; 95% CI=0.71–1.00; P trend =0.08).