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Unadjusted overall survival analysis for breast cancer stages I to III using the AJCC Cancer Staging Manual 7th (A, C, E) and 8th (B, D, F) editions for all patients, subdivided to stage (A and B: stage I; C and D: stage II; E and F: stage III). Hormone receptor (HR) status defined as HR+ if estrogen receptor (ER) + and/or progesterone receptor (PR) +; defined as HR− if ER− and PR−.
