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Kaplan–Meier estimates of the probability of survival for patients with breast cancer according to the receptor expression in classification. All patients were stratified according to ER status, PR status, and HER-2 status. a, b The overall survival (OS) rate of breast cancer patients in different ER status. c, d The overall survival (OS) rate of breast cancer patients in different PR status. e, f The overall survival (OS) rate of breast cancer patients in different HER-2 status
