Patterson P Daniel, Weaver Matthew D, Hostler David, Guyette Francis X, Callaway Clifton W, Yealy Donald M
Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15260, USA.
Prehosp Emerg Care. 2012 Oct-Dec;16(4):572-6. doi: 10.3109/10903127.2012.704491. Epub 2012 Jul 23.