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. 2019 Jan 10;48:1. doi: 10.1186/s40463-018-0323-6

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© The Author(s). 2019

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. 3 — Disease specific survival of p16 positive and negative oropharyngeal cancer patients stratified by smoking and EGFR. Kaplan-Meier analysis of disease specific survival in p16 positive and negative patients is shown with listed 5-year estimates when stratified by a) smoking status defined by 20 pack years and b) total tumor EGFR levels. P-value according to Log-Rank is listed at bottom right of each survival graph