1. Department of Emergency Medicine Allegheny Health Network–Saint Vincent Erie Pennsylvania USA
2. 40th Forward Resuscitative Surgical Detachment 627th Hospital Center Fort Carson Colorado USA
3. Department of Military and Emergency Medicine Uniformed Services University of the Health Sciences Bethesda Maryland USA
4. Department of Emergency Medicine Harbor–UCLA Torrance California USA
5. Department of Emergency Medicine Brigham and Women’s Hospital Boston Massachusetts USA