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Rothman RE, Hsu EB, Kahn CA, Kelen GD.Rothman RE, et al. Among authors: kelen gd.Acad Emerg Med. 2006 Nov;13(11):1160-8. doi: 10.1197/j.aem.2006.07.002. Epub 2006 Oct 10.Acad Emerg Med. 2006.PMID: 17032947Free article.