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. 2017 Sep 7;12:149. doi: 10.1186/s13014-017-0884-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. 2 — a Kaplan Meier survival curve of biochemical free survival rates for T1-T2 versus T3-T4 stage. b Kaplan Meier survival curve of biochemical free survival as a function of nadir PSA (nPSA) with the cutoff of 0.06 ng/ml. c Kaplan Meier survival curve of biochemical free survival rates for patients with Gleason’s score (GS) < 8 and those with GS 8–10