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Barklin A, Tønnesen E, Ingerslev J, Sørensen B, Fenger-Eriksen C.Barklin A, et al. Among authors: tonnesen e.Anesthesiology. 2009 Jun;110(6):1287-92. doi: 10.1097/ALN.0b013e3181a10352.Anesthesiology. 2009.PMID: 19417611