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Kim MJ, Liu Y, Oh SH, Ahn HW, Kim SH, Nelson G.Kim MJ, et al. Among authors: oh sh.Korean J Orthod. 2021 Mar 25;51(2):77-85. doi: 10.4041/kjod.2021.51.2.77.Korean J Orthod. 2021.PMID: 33678623Free PMC article.