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. 2021 Jul 30;12:672024. doi: 10.3389/fendo.2021.672024

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Copyright © 2021 Chen, Zeng, Liu, Lu, Xiang, Chen, Yu, Zuo, Lin and Ma

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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The calibration curves of the nomogram for the 12 (A), 24 (B), and 36 months (C) in the validation set. The decision curve analysis of the nomogram for the 12 (D), 24 (E), and 36 months (F) in the validation set.