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Roozenbeek B, Maas AI, Lingsma HF, Butcher I, Lu J, Marmarou A, McHugh GS, Weir J, Murray GD, Steyerberg EW; IMPACT Study Group.Roozenbeek B, et al. Among authors: lingsma hf.Crit Care Med. 2009 Oct;37(10):2683-90. doi: 10.1097/ccm.0b013e3181ab85ec.Crit Care Med. 2009.PMID: 19885979