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. 2023 Apr 24;15:469–481. doi: 10.2147/CLEP.S408182

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© 2023 Ye et al.

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Restricted cubic splines of cytokine score with breast cancer (a) OS and (b) PFS. Solid black lines were hazard ratios, with gray area showing 95% CIs derived from restricted cubic spline regressions with three knots.