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Nichols-Larsen DS, Clark PC, Zeringue A, Greenspan A, Blanton S.Nichols-Larsen DS, et al. Among authors: clark pc.Stroke. 2005 Jul;36(7):1480-4. doi: 10.1161/01.STR.0000170706.13595.4f. Epub 2005 Jun 9.Stroke. 2005.PMID: 15947263Clinical Trial.