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Winterhalter M, Brandl K, Rahe-Meyer N, Osthaus A, Hecker H, Hagl C, Adams HA, Piepenbrock S.Winterhalter M, et al. Among authors: osthaus a.Eur J Anaesthesiol. 2008 Apr;25(4):326-35. doi: 10.1017/S0265021507003043. Epub 2007 Nov 16.Eur J Anaesthesiol. 2008.PMID: 18005471Clinical Trial.