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Elkassabany N, Ahmed M, Malkowicz SB, Heitjan DF, Isserman JA, Ochroch EA.Elkassabany N, et al. Among authors: isserman ja.J Clin Anesth. 2013 Sep;25(6):459-65. doi: 10.1016/j.jclinane.2013.04.009. Epub 2013 Aug 17.J Clin Anesth. 2013.PMID: 23965191Clinical Trial.