Assets and liabilities of helicopter evacuation in support of emergency medical services.
D000063:Accidents, Traffic; D000401:Aircraft; D002318:Cardiovascular Diseases / Q000401:mortality / Q000628:therapy; D004632:Emergency Medical Services; D006801:Humans; D008887:Military Medicine; D009657:North Carolina; D013997:Time Factors; D014187:Transportation of Patients; D014218:Triage; D014947:Wounds and Injuries / Q000401:mortality