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Ilkhchoui Y, Koshkin E, Windsor JJ, Petersen TR, Charles M, Pack JD.Ilkhchoui Y, et al. Among authors: petersen tr.Anesth Pain Med. 2013 Dec 27;4(1):e11906. doi: 10.5812/aapm.11906. eCollection 2014 Feb.Anesth Pain Med. 2013.PMID: 24660144Free PMC article.