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. 2023 Nov 22;110(2):934–942. doi: 10.1097/JS9.0000000000000907

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Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc.

This is an open access article distributed under the Creative Commons Attribution-ShareAlike License 4.0, which allows others to remix, tweak, and build upon the work, even for commercial purposes, as long as the author is credited and the new creations are licensed under the identical terms. http://creativecommons.org/licenses/by-sa/4.0/

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Kaplan–Meier estimates of (A) disease-free survival, (B) recurrence-free survival, (C) distant metastasis-free survival, (D) locoregional recurrence-free survival, and (E) overall survival according to breast density reduction (MDR) and treatment groups. HR, hazard ratio; TAM-only, tamoxifen-only group; TAM + OFS, tamoxifen plus ovarian function suppression group. *Hazard ratio with its associated 95% CI was estimated using the Cox regression model adjusted for age, tumor size, lymph node status, tumor grade, and HER2 status.