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. 2013 May 28;8(5):e64158. doi: 10.1371/journal.pone.0064158

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© 2013 Li 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 properly credited.

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(A) Overall survival (OS) according to the KPI for patients with extranodal natural killer (NK)/T-cell lymphoma (ENKTL), nasal type. (B) OS of patients with KPI score = 0–1 according to the new prognostic index. (C) OS of patients with KPI score = 1–2 according to the new prognostic index. (D) OS of patients with KPI score = 2–4 according to the new prognostic index.