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. 2022 Mar 22;9:871577. doi: 10.3389/fsurg.2022.871577

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Copyright © 2022 Chen, Zhan, Du, Liu, Deng, Zhao, Jiang, Xiong, Zhang, Chen and Fu.

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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ROC curves and calibration plots for the nomogram. The ROC curves for the nomogram in the training cohort (A) and the validation cohort (B). The calibration plots for the nomogram in the training cohort (C) and the validation cohort (D).