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. 2009 Jul 14;101(3):395–402. doi: 10.1038/sj.bjc.6605155

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Copyright © 2009 Cancer Research UK

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Variation with age at diagnosis in the proportion of node-positive breast cancer patients in BCCOM years 1–3 recorded as having received chemotherapy. Cases or which it was not known whether a patient had received chemotherapy have been excluded.