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. 2016 Oct 17;11(10):e0164491. doi: 10.1371/journal.pone.0164491

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© 2016 Wang et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 1 — (A) The distribution of OPSCC patients treated at Shanghai 9th People’s Hospital in Mainland China. (B) The age distribution of the 188 primary OPSCC patients. (C) The number of cases of primary OSCC patients each year from 2008 to 2013. (D) The proportional trend of OPSCC numbers relative to OSCC each year from 2008 to 2013.