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. 2017 Nov 7;17:725. doi: 10.1186/s12885-017-3704-8

Fig. 3.

Fig. 3

Subgroup analyses. a&b Pre-operation and intra/post-operation on overall survival and disease-free survival, respectively; c&d Without and with post-chemotherapy on overall survival and disease-free survival, respectively; e&f Stage II and stage III on overall survival and disease-free survival, respectively