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. 2019 Nov 22;32(8):1030–1035. doi: 10.1097/MEG.0000000000001610

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Copyright © 2019 The Author(s). Published by Wolters Kluwer Health, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CC-BY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Fig. 2. — Kaplan–Meier survival curves for OS (a) and DFS (b) according to metformin usage in the propensity score-matched cohort (n = 176) (P values by stratified log-rank test). DFS, disease-free survival; OS, overall survival.