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. 2004 Jul 27;91(5):873–878. doi: 10.1038/sj.bjc.6602074

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Copyright © 2004 Cancer Research UK

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Distribution of patients with elevated levels of serum CYFRA 21-1, CEA, and CA 15-3 in primary and recurrent breast cancer. The number in each area is the number of patients with elevated levels of tumour markers.