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. 2019 Jan 8;11(1):56. doi: 10.3390/cancers11010056

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Kaplan–Meier survival curves of progression-free survival in patients with non-metastatic diseases, stratified with CTC and CEA. (A) Red line: CTC > 4; blue line: CTC ≤ 4; p = 0.242; (B) red line: CEA > 5 ng/mL; blue line: CEA ≤ 5 ng/mL, p = 0.176; (C) red line: both CTC > 4 and CEA > 5 ng/mL; blue line: others, p = 0.033.