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Nawfel RD, Young GS.Nawfel RD, et al.AJNR Am J Neuroradiol. 2017 Mar;38(3):455-461. doi: 10.3174/ajnr.A5040. Epub 2017 Jan 19.AJNR Am J Neuroradiol. 2017.PMID: 28104641Free PMC article.