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Geisser W, Vogt J, Wachter U, Hofbauer H, Georgieff M, Ensinger H.Geisser W, et al. Among authors: ensinger h.Intensive Care Med. 2004 Apr;30(4):702-8. doi: 10.1007/s00134-003-2124-1. Epub 2004 Feb 24.Intensive Care Med. 2004.PMID: 14985966Clinical Trial.