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. 2022 Sep 27;8(9):e37922. doi: 10.2196/37922

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©Yi Lv, Qiyu Zhu, Chengdong Xu, Guanbin Zhang, Yan Jiang, Mengjie Han, Cong Jin. Originally published in JMIR Public Health and Surveillance (https://publichealth.jmir.org), 27.09.2022.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Public Health and Surveillance, is properly cited. The complete bibliographic information, a link to the original publication on https://publichealth.jmir.org, as well as this copyright and license information must be included.

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Geographic distribution of online sale amount of HIVST kits in China 2015-2017: (A) 2015 map, (B) 2016 map, and (C) 2017 map. Most HIVST kits were sold online to cities located southeast of the Heihe-Tengchong Line (as shown the red line), which marked a striking difference in the distribution of population in China. Color coded from pale orange to dark orange, and dark orange indicates high level. HIVST: HIV self-testing.