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. 2022 Jul 1;12:889433. doi: 10.3389/fonc.2022.889433

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Copyright © 2022 Park, Lee, Yoon, Kim, Park, Youn, Lee, Lee, Lee, Hur, Jeong, Kim and Bae

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Event-free survival according to age at first delivery in women who gave birth in 2007. (A) All patients, (B) those with one delivery, (C) those with two deliveries, and (D) those with three or more deliveries.