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Olofsen E, Burm AG, Simon MJ, Veering BT, van Kleef JW, Dahan A.Olofsen E, et al. Among authors: veering bt.Anesthesiology. 2008 Oct;109(4):664-74. doi: 10.1097/01.anes.0000334302.50559.c9.Anesthesiology. 2008.PMID: 18813046Free article.