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. 2022 May 31;10:884349. doi: 10.3389/fpubh.2022.884349

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Copyright © 2022 Zhang, Ji, Zhong, Zhu, Zhang, Ge, Kang and Bi.

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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Calibration curves of the nomograms. Calibration curves of 6-, 12- and 18-months overall survival for PCLM patients in (A–C) training cohort and (D–F) verification cohort.