Lawrence M Gillman1,2
, Chad G Ball1
, Nova Panebianco4
, Azzam Al-Kadi1
and Andrew W Kirkpatrick1,2,3 
1
Regional Trauma Services, Calgary Heath Region and Foothills Medical Centre, Calgary, Alberta, Canada
2
Department of Surgery, Calgary Heath Region and Foothills Medical Centre, Calgary, Alberta, Canada
3
Department of Critical Care Medicine, Calgary Heath Region and Foothills Medical Centre, Calgary, Alberta, Canada
4
Department of Emergency Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA