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Roman DE, Barker I, Reilly CS.Roman DE, et al. Among authors: barker i.Anaesthesia. 1993 Apr;48(4):338-40. doi: 10.1111/j.1365-2044.1993.tb06959.x.Anaesthesia. 1993.PMID: 8494141Free article.
Morgan JM, Barker I, Peacock JE, Eissa A.Morgan JM, et al. Among authors: barker i.Anaesthesia. 2007 Feb;62(2):135-9. doi: 10.1111/j.1365-2044.2006.04903.x.Anaesthesia. 2007.PMID: 17223805Free article.Clinical Trial.