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The Kaplan–Meier survival curves of BCSS and OS for the IMPC and IDC stratified by ER/PR status in case–control analysis ((A) BCSS in ER positive status; (B) OS in ER positive status; (C) BCSS in ER negative status; (D) OS in ER negative status; (E) BCSS in PR positive status; (F) OS in PR positive status; (G) BCSS in PR negative status; (H) OS in PR negative status).
