. 2020 Oct 29;22(10):e21369. doi: 10.2196/21369
©Hyunwoo Choo, Myeongchan Kim, Jiyun Choi, Jaewon Shin, Soo-Yong Shin. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.10.2020.
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Figure 2.
Pipeline for data preprocessing. KCDC: Korea Center for Disease Control.