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. 2017 Apr 12;17:263. doi: 10.1186/s12885-017-3272-y

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 4 — Serum KL-6 can predict the outcome of patients with lung adenocarcinoma. Receiver operating characteristic curves for (a) 1-year, (b) 3-year, and (c) 5-year survival. The Kaplan-Meier survival curves for each cohort stratified by the two different cut-off value of serum KL-6; (d) 600 U/mL (set by ROC analyses), (e) 334 U/mL (median value)