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Mo SS, Kim SH, Kook YA, Jeong DM, Chung KR, Nelson G.Mo SS, et al. Among authors: nelson g.Angle Orthod. 2010 Jan;80(1):123-9. doi: 10.2319/030309-123.1.Angle Orthod. 2010.PMID: 19852651Free PMC article.