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Kwon OH, Hong I, Yang J, Wohn DY, Jung WS, Cha M.Kwon OH, et al. Among authors: cha m.EPJ Data Sci. 2021;10(1):28. doi: 10.1140/epjds/s13688-021-00278-7. Epub 2021 May 30.EPJ Data Sci. 2021.PMID: 34094809Free PMC article.
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Park S, Lee SW, Kwak J, Cha M, Jeong B.Park S, et al. Among authors: cha m.J Med Internet Res. 2013 Oct 1;15(10):e217. doi: 10.2196/jmir.2718.J Med Internet Res. 2013.PMID: 24084314Free PMC article.