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. 2018 Dec 18;8:628. doi: 10.3389/fonc.2018.00628

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Copyright © 2018 Zhang, Li, Zhang, Biondi, Fico, Persiani, Ni and Luo.

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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Kaplan-Meier cumulative survival curves of CRC patients stratified by lymph node ratio (LNR 0–4). (A) Kaplan-Meier analysis of overall survival (OS) of CRC patients from SEER database. (B) Kaplan-Meier analysis of cancer-specific survival (CSS) of CRC patients from SEER database. (C) Cumulative probability of CRC-specific death in competing risks. (D) Kaplan-Meier analysis of overall survival (OS) of CRC patients from international multicenter cohort.