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McIntyre RE, Hardcastle C, Eng RL, Nettel-Aguirre A, Urmson K, Lardner DR, Livingstone M, Ewen A, Cox RG.McIntyre RE, et al. Among authors: lardner dr.Can J Anaesth. 2012 Jan;59(1):34-40. doi: 10.1007/s12630-011-9616-1. Epub 2011 Oct 29.Can J Anaesth. 2012.PMID: 22042703Clinical Trial.