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. 2021 Apr 15;13:3345–3355. doi: 10.2147/CMAR.S294616

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© 2021 Bao et al.

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Kaplan–Meier survival curve of overall survival in patients. The survival rate of IF was 96.84%, 89.69%, 77.42% and 43.44% at 24, 36, 48 and 60 months after operation in all patients studied, respectively.