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. 2019 Sep 25;11:1758835919877729. doi: 10.1177/1758835919877729

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© The Author(s), 2019

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 3. — Stratified analysis using the integrated model of the GTVnd and pre-EBV DNA copy numbers for the prognostic prediction of DMFS and OS in all patients (a, d), and patients with (b, e) or without (c, f) induction chemotherapy. Group 1 (patients with GTVnd ⩽20 ml and pre-EBV DNA ⩽2000 copies/ml), Group 2 (patients with GTVnd ⩽20 ml and pre-EBV DNA >2000 copies/ml), Group 3 (patients with GTVnd >20 ml and pre-EBV DNA ⩽2000 copies/ml), and Group 4 (patients with GTVnd >20 ml and pre-EBV DNA >2000 copies/ml).

DMFS, distant metastasis-free survival; GTVnd, gross tumor volume of lymph nodes; pre-EBV, pretreatment plasma Epstein–Barr virus DNA; OS, overall survival.