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Pollock JE, Mulroy MF, Bent E, Polissar NL.Pollock JE, et al. Among authors: mulroy mf.Anesth Analg. 2003 Aug;97(2):397-401. doi: 10.1213/01.ANE.0000070226.10440.3A.Anesth Analg. 2003.PMID: 12873924Clinical Trial.