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. 2019 May 8;11:4171–4184. doi: 10.2147/CMAR.S176937

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© 2019 Ding et al.

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Funnel plot evaluating possible publication bias for (A) tumor stage; (B) sex; (C) OS; (D) ORR.

Abbreviations: OS, overall survival; ORR, objective response rate.