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Ok SM, Lee SM, Park HR, Jeong SH, Ko CC, Kim YI.Ok SM, et al. Among authors: jeong sh.Cranio. 2018 Nov;36(6):366-372. doi: 10.1080/08869634.2017.1361624. Epub 2017 Aug 7.Cranio. 2018.PMID: 28782462Free PMC article.