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McLean SA, Kirsch NL, Tan-Schriner CU, Sen A, Frederiksen S, Harris RE, Maixner W, Maio RF.McLean SA, et al.Am J Emerg Med. 2009 Feb;27(2):182-90. doi: 10.1016/j.ajem.2008.01.054.Am J Emerg Med. 2009.PMID: 19371526