. 2023 Feb 15;25:e42985. doi: 10.2196/42985
©Yongtai Liu, Zhijun Yin, Congning Ni, Chao Yan, Zhiyu Wan, Bradley Malin. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 15.02.2023.
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Figure 2.
Number of tweets collected in US urban core and small town/rural zip codes.