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Lases EC, Schepens MA, Haas FJ, Aarts LP, ter Beek HT, van Dongen EP, Siegers HP, van der Tweel I, Boezeman EH.Lases EC, et al. Among authors: van dongen ep, van der tweel i.Br J Anaesth. 2005 Nov;95(5):651-61. doi: 10.1093/bja/aei239. Epub 2005 Sep 30.Br J Anaesth. 2005.PMID: 16199420Free article.