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. 2014 Nov 28;14:890. doi: 10.1186/1471-2407-14-890

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© Li et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Overall survival (OS) and progression-free survival (PFS) according to CD30-positive vs. CD30-negative expression at diagnosis in patients with extranodal natural killer T-cell lymphomas, nasal type (ENKTL). Kaplan-Meier plots of OS (A) for all patients and PFS (B) for all patients; Kaplan-Meier plots of OS (C) and PFS (D) for subgroups with low International Prognostic Index (IPI) scores of 0–1; Kaplan–Meier plots of OS (E) and PFS (F) for subgroups with low Korean Prognostic Index (KPI) scores of 0–1.