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Walls RM, Brown CA 3rd, Bair AE, Pallin DJ; NEAR II Investigators.Walls RM, et al.J Emerg Med. 2011 Oct;41(4):347-54. doi: 10.1016/j.jemermed.2010.02.024. Epub 2010 Nov 9.J Emerg Med. 2011.PMID: 20434289