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The Kaplan–Meier survival curves of BCSS and OS stratified by the histologic type of IMPC and IDC (n = 984 in each group) in the case–control analysis ((A) BCSS in completely matched case–control analysis; (B) OS in completely matched case–control analysis; (C) BCSS in partly matched case–control analysis; (D) OS in partly matched case–control analysis).
