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. 2021 Sep 23;8:738693. doi: 10.3389/fmed.2021.738693

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Copyright © 2021 Cai, Zeng, Zhang and Ruan.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Incident number of non-Hodgkin lymphoma in age groups, SDI areas, and geographic regions from 1990 to 2019. (A) Incident number in age groups; (B) ASIR in SDI areas; (C) incident number in geographical regions. SDI, sociodemographic index; ASIR, age-standardized incidence rate.