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Zipfel GJ, Han H, Ford AL, Lee JM.Zipfel GJ, et al.Stroke. 2009 Mar;40(3 Suppl):S16-9. doi: 10.1161/STROKEAHA.108.533174. Epub 2008 Dec 8.Stroke. 2009.PMID: 19064794Free PMC article.
Kim GS, Cho S, Nelson JW, Zipfel GJ, Han BH.Kim GS, et al. Among authors: zipfel gj.PLoS One. 2014 Feb 14;9(2):e88962. doi: 10.1371/journal.pone.0088962. eCollection 2014.PLoS One. 2014.PMID: 24551199Free PMC article.