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. 2022 Mar 4;12:764571. doi: 10.3389/fendo.2021.764571

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Copyright © 2022 Song, Cheng, Lu, Lu, Zhou and Wang

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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External calibration curves in the validation cohort. (A) The 3-year and (B) 5-year overall survival (OS) nomogram calibration curves. (C) The 3-year and (D) 5-year cancer-specific survival (CSS) nomogram calibration curves.