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. 2020 Nov;8(21):1404. doi: 10.21037/atm-20-4441

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2020 Annals of Translational Medicine. All rights reserved.

Open Access Statement: This is an Open Access article distributed in accordance with the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License (CC BY-NC-ND 4.0), which permits the non-commercial replication and distribution of the article with the strict proviso that no changes or edits are made and the original work is properly cited (including links to both the formal publication through the relevant DOI and the license). See: https://creativecommons.org/licenses/by-nc-nd/4.0.

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Efficacy of metformin in breast cancer. (A) Effect of metformin plus standard treatment on objective response rate (ORR) in breast cancer. (B,C) Effect of metformin plus standard treatment on overall survival (OS) (B) and progression-free survival (PFS) (C) in breast cancer. RR, relative risk; HR, hazard ratio.