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Brix-Christensen V, Tønnesen E, Hjortdal VE, Chew M, Flø C, Marqversen J, Hansen JF, Andersen NT, Ravn HB.Brix-Christensen V, et al. Among authors: ravn hb.Crit Care Med. 2002 Mar;30(3):670-6. doi: 10.1097/00003246-200203000-00029.Crit Care Med. 2002.PMID: 11990932