Ewout W Steyerberg, Nino Mushkudiani, Pablo Perel, Isabella Butcher, Juan Lu, Gillian S McHugh, Gordon D Murray, Anthony Marmarou, Ian Roberts, J. Dik F Habbema, Andrew I. R Maas
PLoS Med. 2008 August; 5(8): e165. Published online 2008 August 5. doi: 10.1371/journal.pmed.0050165