Progesterone receptor expression is an independent prognostic variable in early breast cancer: a population-based study.

Br J Cancer · 2014 · PMC3915123 · PMID 24300977

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highly significantno p-value reported

Separating the entire cohort of patients into four groups on the basis of ER, PR and HER2 status demonstrated a highly significant difference in BCSS in these groups ( Figure 2A ).

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