Nagpal Seema, Halpern Casey H, Sims Carrie, Calland James F, Gracias Vicente H, Schuster James M, Leroux Peter D, Levine Joshua M
Department of Neurology, Division of Neurocritical Care, University of Pennsylvania Medical Center, Philadelphia, Pennsylvania 19104-4283, USA.
J Trauma. 2009 Nov;67(5):E152-5. doi: 10.1097/TA.0b013e3180593657.