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. 2022 Aug 26;149(7):3895–3903. doi: 10.1007/s00432-022-04297-3

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Fig. 3 — Kaplan–Meier curves of progression-free survival of each hospital. a Progression free survival curve of combination group and single agent targeted-therapy group in drum tower hospital. b Progression free survival curve of combination group and single agent targeted-therapy group in huainan dongfang tumor hospital. c progression-free survival curve of the combination group of drum tower hospital and huainan dongfang tumor hospital. d progression-free survival curve of single drug targeted treatment group of drum tower hospital and huainan dongfang tumor hospital