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. 2021 Jul 12;11:711061. doi: 10.3389/fonc.2021.711061

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Copyright © 2021 Cai, Zhang, Li, Li, Liu, Xie, Du and Wu

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 GPR-INR nomogram. (To use the nomogram, the patient’s value was located on each variable axis, and a line was drawn to determine the individual points. The sum of these points was located on the total points axis, and a line was drawn downward to determine the likelihood of 1-, 3- or 5-year OS). CA-199, preoperative serum CA 19-9 level; LN metastasis, regional lymph node metastasis.