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Goyal M, Menon BK, Coutts SB, Hill MD, Demchuk AM; Penumbra Pivotal Stroke Trial Investigators, Calgary Stroke Program, and the Seaman MR Research Center.Goyal M, et al. Among authors: menon bk.Stroke. 2011 Jan;42(1):93-7. doi: 10.1161/STROKEAHA.110.594481. Epub 2010 Nov 18.Stroke. 2011.PMID: 21088240Clinical Trial.